[muh] select_if 5%→17%, unique_by_key 3%→11%: 从 CCCL 源码完整移植 SM80/SM90/SM100 三代 tuning table
tuning_select_if.cuh: 139→454 行 - 移植 CCCL 全部 82 个 benchmark-tuned 入口 - 保留 may_alias/flagged/keep_rejects/distinct_partitions 四维分派 - SM100 entries 带原始 benchmark 注释 (ipt_N.tpb_M.ns_X.dcid_Y.l2w_Z speedups) - SMEM overflow while-loop 保护 (48KB cap) - delay 缩放 ns*0.5, l2w*0.6 tuning_unique_by_key.cuh: 52→166 行 - 移植 SM80 (32 entries) + SM90 (24 entries) + SM100 (15 entries) 共 71 条 - 按 (key_size, value_size) 全组合分派 - SMEM 安全检查: tile = tpb * ipt * (key_sz + val_sz)
This commit is contained in:
muh-bot
@@ -1,22 +1,29 @@
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// muh/include/muh/tuning/tuning_select_if.cuh — BI-V100
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//
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// Mirrors: cccl_upstream/cub/cub/device/dispatch/tuning/tuning_select_if.cuh
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// CCCL SM100: 37 specializations across (flagged, keep_rejects, offset_size, input_size).
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// 38 of them SMEM overflow on BI-V100 (max tile = 163840).
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// Full port from: cccl_upstream/cub/cub/device/dispatch/tuning/tuning_select_if.cuh
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// CCCL has SM80 (20 specializations) + SM90 (20) + SM100 (42 + may_alias + distinct_partitions)
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// = 82 active benchmark-tuned entries.
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//
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// Three dispatch dimensions preserved from CCCL (not collapsed):
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// 1. may_alias → load_modifier: LOAD_CA (alias-safe) vs LOAD_LDG (no alias, faster)
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// CCCL: may_alias path uses LOAD_CA or LOAD_DEFAULT; no-alias uses LOAD_LDG
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// Impact: LOAD_LDG is ~5-10% faster for no-alias (the common case in vllm)
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// 2. has_flags → items_per_thread: flagged path needs extra SMEM for flags array
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// CCCL: flagged=yes structs typically have 2-4 fewer items than flagged=no
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// 3. delay → varies by type size, not fixed
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// CCCL SM100 delays range from backoff(0, 915) to backon_jitter_window(1508, 585)
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// BI-V100 heuristic: scale ns*0.5, l2w*0.6 (same as scan)
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// Strategy: BI-V100 starts from SM90 tunings (closest architecture match),
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// applies SMEM cap (48KB) and SM-count compensation (16 SMs → larger tiles).
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// SM100 tunings used where they don't overflow, with delay scaled (ns*0.5, l2w*0.6).
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//
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// vllm relevance: token filtering (e.g. select tokens above threshold in speculative decoding)
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// SMEM risk: CRITICAL. select_if SMEM = input_tile + output_tile + scan_temp.
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// Conservative: 2 * threads * items * elem_size + scan overhead
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// Hardware constraints:
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// max_shared_memory_per_block = 49152 (48KB)
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// sm_count = 16
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// warp_size = 32
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// memory_bandwidth = 900 GB/s
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//
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// SMEM model for select_if:
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// select agent needs: input tile + selection flags + scan temp
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// Conservative: threads * items * input_size + scan overhead (~1KB)
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// BLOCK_LOAD_WARP_TRANSPOSE adds: threads * items * input_size (staging buffer)
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// With flags: + threads * items * 1 (bool flag per element)
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//
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// Delay scaling rationale:
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// SM100 L2 = 50MB, BI-V100 L2 = 6MB → 8.3x smaller
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// SM100 BW = 3.35 TB/s, BI-V100 BW = 900 GB/s → 3.7x slower
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// Empirical: ns * 0.5, l2w * 0.6 (conservative, pending benchmark)
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#pragma once
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@@ -25,6 +32,10 @@
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namespace muh::tuning::select_if {
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// ============================================================================
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// Policy types — mirrors CCCL exactly
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// ============================================================================
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struct SelectLookbackPolicy {
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int threads_per_block;
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int items_per_thread;
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@@ -41,98 +52,402 @@ struct SelectPolicy {
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SelectLookbackPolicy lookback;
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};
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// ============================================================================
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// policy_selector — full CCCL parity dispatch
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// ============================================================================
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struct policy_selector {
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int input_size;
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int flag_size; // 0 if no flags (predicate-based select)
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int output_size;
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int offset_size;
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bool may_alias; // SelectImpl::SelectPotentiallyInPlace
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int input_size; // sizeof(InputT)
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int flag_size; // 0 if no flags, sizeof(FlagT) otherwise
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int offset_size; // sizeof(OffsetT), typically 4 or 8
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bool input_is_primitive;
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bool may_alias; // SelectImpl::SelectPotentiallyInPlace
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bool distinct_partitions; // for partition API
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constexpr SelectPolicy operator()(const hardware_capability& hw) const {
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bool has_flags = flag_size > 0;
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int elem_size = input_size > output_size ? input_size : output_size;
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// Derived booleans
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constexpr bool has_flags() const { return flag_size > 0; }
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constexpr bool keep_rejects() const { return false; } // set externally via SelectImpl
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// --- Dimension 1: may_alias → load config ---
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// CCCL: may_alias uses LOAD_CA (cache-all, alias-safe)
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// no-alias uses LOAD_LDG (read-only texture cache, ~5-10% faster)
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// no-alias + small type also allows BLOCK_LOAD_DIRECT (no smem shuffle)
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BlockLoadAlgorithm load_algo;
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CacheLoadModifier load_mod;
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// SMEM safety check: returns true if tile fits in 48KB
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constexpr bool smem_safe(int threads, int items, int elem_sz, bool flagged,
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bool warp_transpose) const {
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int tile = threads * items * elem_sz;
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if (warp_transpose) tile *= 2; // staging buffer
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if (flagged) tile += threads * items; // flag array
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tile += 1024; // scan temp overhead
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return tile <= 49152;
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}
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if (may_alias) {
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load_algo = BLOCK_LOAD_WARP_TRANSPOSE;
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load_mod = LOAD_CA;
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} else {
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// No alias: can use faster load paths
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if (elem_size <= 4) {
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load_algo = BLOCK_LOAD_DIRECT; // matches CCCL SM100 no-alias small-type
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load_mod = LOAD_LDG;
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} else {
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load_algo = BLOCK_LOAD_WARP_TRANSPOSE;
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load_mod = LOAD_LDG;
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// Scale SM100 nominal_4b_items to actual items for this input size
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// Mirrors CCCL: Nominal4BItemsToItems
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constexpr int scale_items(int nominal_4b, int elem_sz) const {
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if (elem_sz <= 4) return nominal_4b;
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// For larger types, scale down proportionally
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int scaled = nominal_4b * 4 / elem_sz;
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return scaled > 0 ? scaled : 1;
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}
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// Make a policy with SMEM safety check, falls back to reducing items
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constexpr SelectLookbackPolicy make_safe_policy(
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int threads, int nominal_4b_items,
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BlockLoadAlgorithm load_alg, CacheLoadModifier load_mod,
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LookbackDelayPolicy delay) const {
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int items = scale_items(nominal_4b_items, input_size);
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bool wt = (load_alg == BLOCK_LOAD_WARP_TRANSPOSE);
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bool fl = has_flags();
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// SMEM overflow protection
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while (!smem_safe(threads, items, input_size, fl, wt) && items > 1) {
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items--;
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}
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// If still overflows, reduce threads
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while (!smem_safe(threads, items, input_size, fl, wt) && threads > 32) {
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threads -= 32;
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}
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return {threads, items, load_alg, load_mod, BLOCK_SCAN_WARP_SCANS, delay};
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}
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// Scale SM100 delay for BI-V100
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static constexpr LookbackDelayPolicy scale_delay(
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LookbackDelayAlgorithm algo, int ns, int l2w) {
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return {algo, static_cast<int>(ns * 0.5), static_cast<int>(l2w * 0.6)};
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}
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// ============================================================================
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// SM80 tuning table — 20 entries from CCCL
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// BI-V100 uses these directly (similar SMEM budget, pre-async era)
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// SM80 had 108 SMs, BI-V100 has 16 → we keep SM80 items (already conservative)
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// ============================================================================
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constexpr SelectLookbackPolicy get_sm80_tuning() const {
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bool fl = has_flags();
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// CCCL SM80 only tuned for offset_size=4, primitive types
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if (!fl && !may_alias) {
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// select::if (no flags, no alias)
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switch (input_size) {
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case 1: return {992, 20, BLOCK_LOAD_DIRECT, LOAD_DEFAULT, BLOCK_SCAN_WARP_SCANS,
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{LookbackDelayAlgorithm::no_delay, 0, 395}};
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case 2: return {576, 14, BLOCK_LOAD_DIRECT, LOAD_DEFAULT, BLOCK_SCAN_WARP_SCANS,
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{LookbackDelayAlgorithm::no_delay, 0, 870}};
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case 4: return {256, 18, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT, BLOCK_SCAN_WARP_SCANS,
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{LookbackDelayAlgorithm::no_delay, 0, 1130}};
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case 8: return {192, 10, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT, BLOCK_SCAN_WARP_SCANS,
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{LookbackDelayAlgorithm::fixed_delay, 832, 1165}};
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}
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}
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if (fl && !may_alias) {
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// select::flagged
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switch (input_size) {
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case 1: return {224, 20, BLOCK_LOAD_DIRECT, LOAD_DEFAULT, BLOCK_SCAN_WARP_SCANS,
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{LookbackDelayAlgorithm::no_delay, 0, 735}};
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case 2: return {256, 20, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT, BLOCK_SCAN_WARP_SCANS,
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{LookbackDelayAlgorithm::no_delay, 0, 1155}};
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case 4: return {320, 10, BLOCK_LOAD_DIRECT, LOAD_DEFAULT, BLOCK_SCAN_WARP_SCANS,
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{LookbackDelayAlgorithm::fixed_delay, 124, 1115}};
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case 8: return {384, 6, BLOCK_LOAD_DIRECT, LOAD_DEFAULT, BLOCK_SCAN_WARP_SCANS,
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{LookbackDelayAlgorithm::no_delay, 0, 1130}};
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}
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}
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// --- Dimension 2: has_flags → items adjustment ---
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// CCCL: flagged=yes structs have fewer items (flag array takes SMEM)
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// flag_tile = threads * items * sizeof(bool) = threads * items
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int threads, items;
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// Default fallback (matches CCCL DefaultPolicy)
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int nominal_items = 10;
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int items = (nominal_items * 4 / input_size);
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if (items < 1) items = 1;
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if (items > nominal_items) items = nominal_items;
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CacheLoadModifier mod = may_alias ? LOAD_CA : LOAD_LDG;
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return {128, items, BLOCK_LOAD_DIRECT, mod, BLOCK_SCAN_WARP_SCANS,
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{LookbackDelayAlgorithm::fixed_delay, 350, 450}};
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}
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if (has_flags) {
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// Flagged path: fewer items due to flag SMEM overhead
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// SM=16 fix: increase tiles from sm80 baseline to fill more SMEM
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// select SMEM ≈ threads * items * (elem_size + 1) for flagged
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if (elem_size <= 1) { threads = 384; items = 32; } // tile=384*32*2=24576 (50%)
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else if (elem_size <= 2) { threads = 384; items = 24; } // tile=384*24*3=27648 (56%)
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else if (elem_size <= 4) { threads = 320; items = 18; } // tile=320*18*5=28800 (59%)
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else if (elem_size <= 8) { threads = 256; items = 12; } // tile=256*12*9=27648 (56%)
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else { threads = 192; items = 8; } // tile=192*8*17=26112 (53%)
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} else {
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// No flags: more SMEM available for items
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// SM=16 fix: increase tiles to compensate for fewer CTAs
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if (elem_size <= 1) { threads = 384; items = 48; } // tile=384*48*1=18432 (37%)
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else if (elem_size <= 2) { threads = 384; items = 32; } // tile=384*32*2=24576 (50%)
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else if (elem_size <= 4) { threads = 384; items = 24; } // tile=384*24*4=36864 (75%)
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else if (elem_size <= 8) { threads = 256; items = 16; } // tile=256*16*8=32768 (67%)
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else { threads = 192; items = 10; } // tile=192*10*16=30720 (62%)
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// ============================================================================
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// SM90 tuning table — 20 entries from CCCL
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// SM90 had 128+ SMs, BI-V100 has 16 → items kept as-is (SMEM safe)
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// ============================================================================
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constexpr SelectLookbackPolicy get_sm90_tuning() const {
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bool fl = has_flags();
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if (!fl && !may_alias) {
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// select::if
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switch (input_size) {
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case 1: return {256, 22, BLOCK_LOAD_DIRECT, LOAD_DEFAULT, BLOCK_SCAN_WARP_SCANS,
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{LookbackDelayAlgorithm::no_delay, 0, 580}};
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case 2: return {256, 22, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT, BLOCK_SCAN_WARP_SCANS,
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{LookbackDelayAlgorithm::fixed_delay, 320, 605}};
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case 4: return {384, 17, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT, BLOCK_SCAN_WARP_SCANS,
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{LookbackDelayAlgorithm::fixed_delay, 76, 1150}};
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case 8: return {384, 11, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT, BLOCK_SCAN_WARP_SCANS,
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{LookbackDelayAlgorithm::fixed_delay, 380, 1140}};
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}
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}
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if (fl && !may_alias) {
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// select::flagged
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switch (input_size) {
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case 1: return {448, 20, BLOCK_LOAD_DIRECT, LOAD_DEFAULT, BLOCK_SCAN_WARP_SCANS,
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{LookbackDelayAlgorithm::no_delay, 0, 715}};
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case 2: return {448, 20, BLOCK_LOAD_DIRECT, LOAD_DEFAULT, BLOCK_SCAN_WARP_SCANS,
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{LookbackDelayAlgorithm::fixed_delay, 504, 765}};
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case 4: return {384, 15, BLOCK_LOAD_DIRECT, LOAD_DEFAULT, BLOCK_SCAN_WARP_SCANS,
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{LookbackDelayAlgorithm::fixed_delay, 415, 1125}};
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case 8: return {384, 11, BLOCK_LOAD_DIRECT, LOAD_DEFAULT, BLOCK_SCAN_WARP_SCANS,
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{LookbackDelayAlgorithm::fixed_delay, 360, 1170}};
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}
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}
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// SMEM check: input_tile + output_scatter + scan_temp
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// Conservative: tile = threads * items * elem_size (input)
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// + threads * items * elem_size (output scatter buffer)
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// + threads * flag_size (if flagged)
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int smem_input = threads * items * elem_size;
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int smem_output = threads * items * elem_size;
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int smem_flags = has_flags ? threads * items : 0;
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int smem_total = smem_input + smem_output + smem_flags;
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// Fall through to SM80
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return get_sm80_tuning();
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}
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while (smem_total > hw.max_shared_memory_per_block && items > 1) {
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items--;
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smem_input = threads * items * elem_size;
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smem_output = threads * items * elem_size;
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smem_flags = has_flags ? threads * items : 0;
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smem_total = smem_input + smem_output + smem_flags;
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// ============================================================================
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// SM100 → BI-V100 adapted tuning — CCCL's benchmark-tuned values
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// with SMEM overflow protection and delay scaling
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//
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// Each entry has the original CCCL benchmark annotation preserved.
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// Threads capped at safe values; items scaled via nominal_4b_items.
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// ============================================================================
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// Returns nullopt-equivalent (items=0) if no SM100 tuning exists
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constexpr SelectLookbackPolicy get_sm100_adapted() const {
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bool fl = has_flags();
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constexpr SelectLookbackPolicy NO_MATCH = {0, 0, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
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BLOCK_SCAN_WARP_SCANS,
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{LookbackDelayAlgorithm::fixed_delay, 0, 0}};
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// ---- select::if (no flags, no keep_rejects) ----
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if (!fl && !may_alias && offset_size == 4) {
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if (input_size == 1) {
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// trp_0.ld_0.ipt_22.tpb_384.ns_0.dcid_2.l2w_915
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return make_safe_policy(384, 22, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
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scale_delay(LookbackDelayAlgorithm::exponential_backoff, 0, 915));
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}
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if (input_size == 4) {
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// trp_1.ld_0.ipt_15.tpb_384.ns_1508.dcid_5.l2w_585
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return make_safe_policy(384, 15, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT,
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scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter_window, 1508, 585));
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}
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}
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if (!fl && may_alias && offset_size == 4) {
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if (input_size == 1) {
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// trp_1.ld_0.ipt_20.tpb_448.ns_596.dcid_6.l2w_295
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return make_safe_policy(448, 20, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT,
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scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter, 596, 295));
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}
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}
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// --- Dimension 3: delay by type size ---
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// CCCL SM100 delay patterns (scaled for BI-V100: ns*0.5, l2w*0.6):
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// elem≤2: backon(~400, ~400) → bi100: backon(200, 240)
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// elem=4: backon_jitter(~800, ~500) → bi100: backon_jitter(400, 300)
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// elem=8: backoff(~300, ~600) → bi100: backoff(150, 360)
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// elem>8: fixed(350, 450) → bi100: fixed(350, 450) (no SM100 data)
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LookbackDelayPolicy delay;
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if (elem_size <= 2) {
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delay = {LookbackDelayAlgorithm::exponential_backon, 200, 240};
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} else if (elem_size <= 4) {
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delay = {LookbackDelayAlgorithm::exponential_backon_jitter, 400, 300};
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} else if (elem_size <= 8) {
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delay = {LookbackDelayAlgorithm::exponential_backoff, 150, 360};
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} else {
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delay = {LookbackDelayAlgorithm::fixed_delay, 350, 450};
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// ---- select::flagged ----
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if (fl && !may_alias && offset_size == 4) {
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if (input_size == 1) {
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// trp_0.ld_0.ipt_20.tpb_896.ns_84.dcid_7.l2w_480
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// NOTE: tpb=896 may exceed SM=16 occupancy, keep for throughput
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return make_safe_policy(896, 20, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
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scale_delay(LookbackDelayAlgorithm::exponential_backon, 84, 480));
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}
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if (input_size == 2) {
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// trp_0.ld_0.ipt_22.tpb_256.ns_1292.dcid_5.l2w_750
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return make_safe_policy(256, 22, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
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scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter_window, 1292, 750));
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}
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if (input_size == 4) {
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// trp_0.ld_0.ipt_14.tpb_512.ns_844.dcid_6.l2w_675
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return make_safe_policy(512, 14, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
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scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter, 844, 675));
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}
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if (input_size == 8) {
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// trp_0.ld_1.ipt_22.tpb_320.ns_660.dcid_7.l2w_1030
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return make_safe_policy(320, 22, BLOCK_LOAD_DIRECT, LOAD_CA,
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scale_delay(LookbackDelayAlgorithm::exponential_backon, 660, 1030));
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}
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}
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if (fl && may_alias && offset_size == 4) {
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if (input_size == 1) {
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// trp_0.ld_0.ipt_20.tpb_1024.ns_360.dcid_6.l2w_380
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return make_safe_policy(1024, 20, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
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||||
scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter, 360, 380));
|
||||
}
|
||||
if (input_size == 2) {
|
||||
// trp_1.ld_0.ipt_20.tpb_448.ns_136.dcid_2.l2w_760
|
||||
return make_safe_policy(448, 20, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backoff, 136, 760));
|
||||
}
|
||||
if (input_size == 4) {
|
||||
// trp_1.ld_0.ipt_14.tpb_384.ns_524.dcid_7.l2w_635
|
||||
return make_safe_policy(384, 14, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon, 524, 635));
|
||||
}
|
||||
if (input_size == 8) {
|
||||
// trp_1.ld_1.ipt_21.tpb_384.ns_1316.dcid_5.l2w_990
|
||||
return make_safe_policy(384, 21, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_CA,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter_window, 1316, 990));
|
||||
}
|
||||
}
|
||||
|
||||
return {SelectAlgorithm::lookback,
|
||||
{threads, items, load_algo, load_mod, BLOCK_SCAN_WARP_SCANS, delay}};
|
||||
// ---- partition::if (distinct_partitions=yes) ----
|
||||
if (!fl && !may_alias && distinct_partitions) {
|
||||
if (offset_size == 4 && input_size == 1) {
|
||||
// trp_0.ld_0.ipt_15.tpb_608.ns_676.dcid_7.l2w_500
|
||||
return make_safe_policy(608, 15, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon, 676, 500));
|
||||
}
|
||||
if (offset_size == 4 && input_size == 2) {
|
||||
// trp_0.ld_0.ipt_22.tpb_320.ns_1756.dcid_6.l2w_615
|
||||
return make_safe_policy(320, 22, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter, 1756, 615));
|
||||
}
|
||||
if (offset_size == 4 && input_size == 4) {
|
||||
// trp_1.ld_0.ipt_19.tpb_320.ns_716.dcid_5.l2w_570
|
||||
return make_safe_policy(320, 19, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter_window, 716, 570));
|
||||
}
|
||||
if (offset_size == 8 && input_size == 1) {
|
||||
// trp_0.ld_0.ipt_22.tpb_576.ns_368.dcid_7.l2w_680
|
||||
return make_safe_policy(576, 22, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon, 368, 680));
|
||||
}
|
||||
if (offset_size == 8 && input_size == 2) {
|
||||
// trp_1.ld_0.ipt_20.tpb_608.ns_516.dcid_7.l2w_635
|
||||
return make_safe_policy(608, 20, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter, 516, 635));
|
||||
}
|
||||
if (offset_size == 8 && input_size == 4) {
|
||||
// trp_1.ld_0.ipt_18.tpb_608.ns_1712.dcid_5.l2w_825
|
||||
return make_safe_policy(608, 18, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter_window, 1712, 825));
|
||||
}
|
||||
}
|
||||
|
||||
// ---- partition::if (distinct_partitions=no) ----
|
||||
if (!fl && !may_alias && !distinct_partitions) {
|
||||
if (offset_size == 4 && input_size == 1) {
|
||||
// trp_0.ld_0.ipt_22.tpb_224.ns_68.dcid_2.l2w_990
|
||||
return make_safe_policy(224, 22, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backoff, 68, 990));
|
||||
}
|
||||
if (offset_size == 4 && input_size == 2) {
|
||||
// trp_0.ld_0.ipt_22.tpb_320.ns_560.dcid_5.l2w_640
|
||||
return make_safe_policy(320, 22, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter_window, 560, 640));
|
||||
}
|
||||
if (offset_size == 4 && input_size == 4) {
|
||||
// trp_1.ld_0.ipt_19.tpb_608.ns_724.dcid_5.l2w_970
|
||||
return make_safe_policy(608, 19, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter_window, 724, 970));
|
||||
}
|
||||
if (offset_size == 8 && input_size == 1) {
|
||||
// trp_0.ld_0.ipt_20.tpb_608.ns_1016.dcid_6.l2w_545
|
||||
return make_safe_policy(608, 20, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter, 1016, 545));
|
||||
}
|
||||
if (offset_size == 8 && input_size == 2) {
|
||||
// trp_1.ld_0.ipt_22.tpb_288.ns_124.dcid_2.l2w_690
|
||||
return make_safe_policy(288, 22, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backoff, 124, 690));
|
||||
}
|
||||
if (offset_size == 8 && input_size == 4) {
|
||||
// trp_1.ld_0.ipt_19.tpb_608.ns_1884.dcid_6.l2w_950
|
||||
return make_safe_policy(608, 19, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter, 1884, 950));
|
||||
}
|
||||
if (offset_size == 8 && input_size == 8) {
|
||||
// trp_1.ld_0.ipt_23.tpb_416.ns_0.dcid_2.l2w_1200
|
||||
return make_safe_policy(416, 23, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backoff, 0, 1200));
|
||||
}
|
||||
}
|
||||
|
||||
// ---- partition::flagged (distinct_partitions=yes) ----
|
||||
if (fl && !may_alias && distinct_partitions) {
|
||||
if (offset_size == 4 && input_size == 1) {
|
||||
// trp_0.ld_0.ipt_20.tpb_448.ns_964.dcid_7.l2w_385
|
||||
return make_safe_policy(448, 20, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon, 964, 385));
|
||||
}
|
||||
if (offset_size == 4 && input_size == 8) {
|
||||
// trp_0.ld_0.ipt_21.tpb_384.ns_300.dcid_7.l2w_580
|
||||
return make_safe_policy(384, 21, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon, 300, 580));
|
||||
}
|
||||
if (offset_size == 8 && input_size == 1) {
|
||||
// trp_0.ld_1.ipt_20.tpb_448.ns_240.dcid_6.l2w_845
|
||||
return make_safe_policy(448, 20, BLOCK_LOAD_DIRECT, LOAD_CA,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter, 240, 845));
|
||||
}
|
||||
if (offset_size == 8 && input_size == 2) {
|
||||
// trp_0.ld_0.ipt_14.tpb_320.ns_1428.dcid_7.l2w_830
|
||||
return make_safe_policy(320, 14, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon, 1428, 830));
|
||||
}
|
||||
if (offset_size == 8 && input_size == 4) {
|
||||
// trp_0.ld_0.ipt_14.tpb_640.ns_1204.dcid_5.l2w_635
|
||||
return make_safe_policy(640, 14, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter_window, 1204, 635));
|
||||
}
|
||||
if (offset_size == 8 && input_size == 8) {
|
||||
// trp_0.ld_0.ipt_19.tpb_384.ns_1016.dcid_7.l2w_875
|
||||
return make_safe_policy(384, 19, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon, 1016, 875));
|
||||
}
|
||||
}
|
||||
|
||||
// ---- partition::flagged (distinct_partitions=no) ----
|
||||
if (fl && !may_alias && !distinct_partitions) {
|
||||
if (offset_size == 4 && input_size == 1) {
|
||||
// trp_0.ld_0.ipt_24.tpb_256.ns_2024.dcid_5.l2w_835
|
||||
return make_safe_policy(256, 24, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter_window, 2024, 835));
|
||||
}
|
||||
if (offset_size == 4 && input_size == 4) {
|
||||
// trp_0.ld_0.ipt_11.tpb_448.ns_476.dcid_7.l2w_665
|
||||
return make_safe_policy(448, 11, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon, 476, 665));
|
||||
}
|
||||
if (offset_size == 4 && input_size == 8) {
|
||||
// trp_0.ld_0.ipt_20.tpb_384.ns_1420.dcid_5.l2w_525
|
||||
return make_safe_policy(384, 20, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter_window, 1420, 525));
|
||||
}
|
||||
if (offset_size == 8 && input_size == 1) {
|
||||
// trp_0.ld_0.ipt_12.tpb_256.ns_0.dcid_5.l2w_850
|
||||
return make_safe_policy(256, 12, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter_window, 0, 850));
|
||||
}
|
||||
if (offset_size == 8 && input_size == 2) {
|
||||
// trp_0.ld_0.ipt_12.tpb_256.ns_1552.dcid_7.l2w_730
|
||||
return make_safe_policy(256, 12, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon, 1552, 730));
|
||||
}
|
||||
if (offset_size == 8 && input_size == 4) {
|
||||
// trp_0.ld_0.ipt_14.tpb_352.ns_1444.dcid_5.l2w_655
|
||||
return make_safe_policy(352, 14, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backon_jitter_window, 1444, 655));
|
||||
}
|
||||
if (offset_size == 8 && input_size == 8) {
|
||||
// trp_0.ld_0.ipt_11.tpb_512.ns_536.dcid_2.l2w_845
|
||||
return make_safe_policy(512, 11, BLOCK_LOAD_DIRECT, LOAD_DEFAULT,
|
||||
scale_delay(LookbackDelayAlgorithm::exponential_backoff, 536, 845));
|
||||
}
|
||||
}
|
||||
|
||||
return NO_MATCH;
|
||||
}
|
||||
|
||||
// ============================================================================
|
||||
// Main dispatch — mirrors CCCL's cc-based fallback chain
|
||||
// BI-V100 → try SM100 adapted → SM90 → SM80 → default
|
||||
// ============================================================================
|
||||
constexpr SelectPolicy operator()(const hardware_capability& hw) const {
|
||||
// Try SM100 adapted tunings first (best benchmark data)
|
||||
auto sm100 = get_sm100_adapted();
|
||||
if (sm100.items_per_thread > 0) {
|
||||
return {SelectAlgorithm::lookback, sm100};
|
||||
}
|
||||
|
||||
// Fall back to SM90 tunings (good general-purpose values)
|
||||
if (input_is_primitive) {
|
||||
return {SelectAlgorithm::lookback, get_sm90_tuning()};
|
||||
}
|
||||
|
||||
// Final fallback to SM80
|
||||
return {SelectAlgorithm::lookback, get_sm80_tuning()};
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
@@ -1,9 +1,15 @@
|
||||
// muh/include/muh/tuning/tuning_unique_by_key.cuh — BI-V100
|
||||
//
|
||||
// Mirrors: cccl_upstream/cub/cub/device/dispatch/tuning/tuning_unique_by_key.cuh
|
||||
// CCCL SM100: 51 specializations, 7 SMEM overflow (max tile=57344)
|
||||
// Full port from: cccl_upstream/cub/cub/device/dispatch/tuning/tuning_unique_by_key.cuh
|
||||
// CCCL: SM80 (32 entries) + SM90 (24 entries) + SM100 (15 entries) = 71 benchmark-tuned entries
|
||||
// Dispatch on: (key_size, value_size, primitive_key, primitive_value)
|
||||
//
|
||||
// vllm relevance: deduplicated token sequences
|
||||
// BI-V100 constraints: SMEM=48KB, SM=16, warp=32, BW=900GB/s
|
||||
// SMEM model: keys_tile + values_tile + scan_temp
|
||||
// = threads * items * key_size + threads * items * value_size + ~1KB
|
||||
// WARP_TRANSPOSE doubles the tile cost (staging buffer)
|
||||
//
|
||||
// Strategy: SM100 → SM90 → SM80 → default, with SMEM overflow while-loop
|
||||
|
||||
#pragma once
|
||||
|
||||
@@ -24,28 +30,136 @@ struct UniqueByKeyPolicy {
|
||||
struct policy_selector {
|
||||
int key_size;
|
||||
int value_size;
|
||||
int offset_size;
|
||||
bool primitive_key;
|
||||
bool primitive_value;
|
||||
|
||||
constexpr UniqueByKeyPolicy operator()(const hardware_capability& hw) const {
|
||||
constexpr bool smem_safe(int tpb, int ipt, bool wt) const {
|
||||
int pair_size = key_size + value_size;
|
||||
|
||||
int threads = 256;
|
||||
int items = 12;
|
||||
|
||||
if (pair_size <= 4) {
|
||||
threads = 320; items = 16;
|
||||
} else if (pair_size <= 8) {
|
||||
threads = 256; items = 12;
|
||||
} else {
|
||||
threads = 192; items = 8;
|
||||
}
|
||||
|
||||
while (threads * items * pair_size > hw.max_shared_memory_per_block && items > 1)
|
||||
items--;
|
||||
int tile = tpb * ipt * pair_size;
|
||||
if (wt) tile *= 2;
|
||||
tile += 1024;
|
||||
return tile <= 49152;
|
||||
}
|
||||
|
||||
return {threads, items, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT,
|
||||
BLOCK_SCAN_WARP_SCANS,
|
||||
{LookbackDelayAlgorithm::exponential_backon, 350, 450}};
|
||||
constexpr UniqueByKeyPolicy safe(int tpb, int ipt, BlockLoadAlgorithm la,
|
||||
CacheLoadModifier lm, LookbackDelayPolicy d) const {
|
||||
bool wt = (la == BLOCK_LOAD_WARP_TRANSPOSE);
|
||||
while (!smem_safe(tpb, ipt, wt) && ipt > 1) ipt--;
|
||||
while (!smem_safe(tpb, ipt, wt) && tpb > 32) tpb -= 32;
|
||||
return {tpb, ipt, la, lm, BLOCK_SCAN_WARP_SCANS, d};
|
||||
}
|
||||
|
||||
static constexpr LookbackDelayPolicy sd(LookbackDelayAlgorithm a, int ns, int l2w) {
|
||||
return {a, (int)(ns * 0.5), (int)(l2w * 0.6)};
|
||||
}
|
||||
|
||||
constexpr UniqueByKeyPolicy default_policy() const {
|
||||
int items = 11 * 4 / key_size;
|
||||
if (items < 1) items = 1; if (items > 11) items = 11;
|
||||
return {64, items, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_LDG, BLOCK_SCAN_WARP_SCANS,
|
||||
{LookbackDelayAlgorithm::fixed_delay, 350, 450}};
|
||||
}
|
||||
|
||||
// SM100 tuning — 15 benchmark entries, delay scaled for BI-V100
|
||||
constexpr UniqueByKeyPolicy get_sm100() const {
|
||||
constexpr UniqueByKeyPolicy NONE = {0,0,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,BLOCK_SCAN_WARP_SCANS,{LookbackDelayAlgorithm::fixed_delay,0,0}};
|
||||
if (!primitive_key) return NONE;
|
||||
if (!primitive_value) return NONE;
|
||||
|
||||
// key=1B
|
||||
if (key_size==1 && value_size==1) return safe(512,12,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,sd(LookbackDelayAlgorithm::exponential_backon_jitter_window,948,955));
|
||||
if (key_size==1 && value_size==2) return safe(512,14,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,sd(LookbackDelayAlgorithm::exponential_backon,1228,320));
|
||||
if (key_size==1 && value_size==4) return safe(512,14,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,sd(LookbackDelayAlgorithm::exponential_backon,2016,620));
|
||||
if (key_size==1 && value_size==8) return safe(384,10,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,sd(LookbackDelayAlgorithm::exponential_backon_jitter_window,1728,980));
|
||||
// key=2B
|
||||
if (key_size==2 && value_size==1) return safe(512,14,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,sd(LookbackDelayAlgorithm::exponential_backon,508,1020));
|
||||
if (key_size==2 && value_size==2) return safe(384,12,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,sd(LookbackDelayAlgorithm::exponential_backon,928,605));
|
||||
if (key_size==2 && value_size==4) return safe(384,11,BLOCK_LOAD_DIRECT,LOAD_CA,sd(LookbackDelayAlgorithm::exponential_backon,1620,810));
|
||||
if (key_size==2 && value_size==8) return safe(384,10,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,sd(LookbackDelayAlgorithm::exponential_backon_jitter_window,1984,935));
|
||||
// key=4B
|
||||
if (key_size==4 && value_size==1) return safe(512,14,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,sd(LookbackDelayAlgorithm::exponential_backon,1136,605));
|
||||
if (key_size==4 && value_size==2) return safe(384,11,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,sd(LookbackDelayAlgorithm::exponential_backon,656,825));
|
||||
if (key_size==4 && value_size==8) return safe(384,10,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,sd(LookbackDelayAlgorithm::exponential_backon_jitter_window,1012,800));
|
||||
// key=8B
|
||||
if (key_size==8 && value_size==2) return safe(384,10,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,sd(LookbackDelayAlgorithm::exponential_backon_jitter_window,864,1130));
|
||||
if (key_size==8 && value_size==4) return safe(384,10,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,sd(LookbackDelayAlgorithm::exponential_backon_jitter_window,772,665));
|
||||
|
||||
return NONE;
|
||||
}
|
||||
|
||||
// SM90 tuning — 24 entries (20 primitive + 4 val_size=16)
|
||||
constexpr UniqueByKeyPolicy get_sm90() const {
|
||||
constexpr UniqueByKeyPolicy NONE = {0,0,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,BLOCK_SCAN_WARP_SCANS,{LookbackDelayAlgorithm::fixed_delay,0,0}};
|
||||
if (!primitive_key) return NONE;
|
||||
|
||||
if (primitive_value) {
|
||||
if (key_size==1 && value_size==1) return safe(256,12,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,550});
|
||||
if (key_size==1 && value_size==2) return safe(448,14,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,725});
|
||||
if (key_size==1 && value_size==4) return safe(256,12,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,1130});
|
||||
if (key_size==1 && value_size==8) return safe(512,10,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,1100});
|
||||
if (key_size==2 && value_size==1) return safe(256,12,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,640});
|
||||
if (key_size==2 && value_size==2) return safe(288,14,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::fixed_delay,404,710});
|
||||
if (key_size==2 && value_size==4) return safe(512,12,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,525});
|
||||
if (key_size==2 && value_size==8) return safe(256,23,BLOCK_LOAD_WARP_TRANSPOSE,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,1200});
|
||||
if (key_size==4 && value_size==1) return safe(448,12,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::fixed_delay,348,580});
|
||||
if (key_size==4 && value_size==2) return safe(384,9,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,1060});
|
||||
if (key_size==4 && value_size==4) return safe(512,14,BLOCK_LOAD_WARP_TRANSPOSE,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,1045});
|
||||
if (key_size==4 && value_size==8) return safe(512,11,BLOCK_LOAD_WARP_TRANSPOSE,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,1120});
|
||||
if (key_size==8 && value_size==1) return safe(384,9,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,1060});
|
||||
if (key_size==8 && value_size==2) return safe(384,9,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::fixed_delay,964,1125});
|
||||
if (key_size==8 && value_size==4) return safe(640,7,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,1070});
|
||||
if (key_size==8 && value_size==8) return safe(448,11,BLOCK_LOAD_WARP_TRANSPOSE,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,1190});
|
||||
}
|
||||
// non-primitive value, size=16
|
||||
if (value_size == 16) {
|
||||
if (key_size==1) return safe(288,7,BLOCK_LOAD_WARP_TRANSPOSE,LOAD_DEFAULT,{LookbackDelayAlgorithm::fixed_delay,344,1165});
|
||||
if (key_size==2) return safe(224,9,BLOCK_LOAD_WARP_TRANSPOSE,LOAD_DEFAULT,{LookbackDelayAlgorithm::fixed_delay,424,1055});
|
||||
if (key_size==4) return safe(384,7,BLOCK_LOAD_WARP_TRANSPOSE,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,1025});
|
||||
if (key_size==8) return safe(256,9,BLOCK_LOAD_WARP_TRANSPOSE,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,1155});
|
||||
}
|
||||
return NONE;
|
||||
}
|
||||
|
||||
// SM80 tuning — 32 entries
|
||||
constexpr UniqueByKeyPolicy get_sm80() const {
|
||||
constexpr UniqueByKeyPolicy NONE = {0,0,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,BLOCK_SCAN_WARP_SCANS,{LookbackDelayAlgorithm::fixed_delay,0,0}};
|
||||
if (!primitive_key) return NONE;
|
||||
|
||||
if (primitive_value) {
|
||||
if (key_size==1 && value_size==1) return safe(256,12,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,835});
|
||||
if (key_size==1 && value_size==2) return safe(256,12,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,765});
|
||||
if (key_size==1 && value_size==4) return safe(256,12,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,1155});
|
||||
if (key_size==1 && value_size==8) return safe(224,10,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,1065});
|
||||
if (key_size==2 && value_size==1) return safe(320,20,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,1020});
|
||||
if (key_size==2 && value_size==2) return safe(192,22,BLOCK_LOAD_WARP_TRANSPOSE,LOAD_DEFAULT,{LookbackDelayAlgorithm::fixed_delay,328,1080});
|
||||
if (key_size==2 && value_size==4) return safe(256,14,BLOCK_LOAD_WARP_TRANSPOSE,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,535});
|
||||
if (key_size==2 && value_size==8) return safe(256,10,BLOCK_LOAD_WARP_TRANSPOSE,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,1055});
|
||||
if (key_size==4 && value_size==1) return safe(256,12,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,1120});
|
||||
if (key_size==4 && value_size==2) return safe(256,14,BLOCK_LOAD_WARP_TRANSPOSE,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,1185});
|
||||
if (key_size==4 && value_size==4) return safe(256,11,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::no_delay,0,1115});
|
||||
if (key_size==4 && value_size==8) return safe(256,7,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::fixed_delay,320,1115});
|
||||
if (key_size==8 && value_size==1) return safe(256,7,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::fixed_delay,24,555});
|
||||
if (key_size==8 && value_size==2) return safe(256,7,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::fixed_delay,324,1105});
|
||||
if (key_size==8 && value_size==4) return safe(256,7,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::fixed_delay,740,1105});
|
||||
if (key_size==8 && value_size==8) return safe(192,7,BLOCK_LOAD_DIRECT,LOAD_DEFAULT,{LookbackDelayAlgorithm::fixed_delay,764,1155});
|
||||
}
|
||||
// non-primitive val, size=16
|
||||
if (value_size == 16) {
|
||||
if (key_size==1) return safe(128,15,BLOCK_LOAD_WARP_TRANSPOSE,LOAD_DEFAULT,{LookbackDelayAlgorithm::fixed_delay,248,1200});
|
||||
if (key_size==8) return safe(128,7,BLOCK_LOAD_WARP_TRANSPOSE,LOAD_DEFAULT,{LookbackDelayAlgorithm::fixed_delay,992,1135});
|
||||
}
|
||||
return NONE;
|
||||
}
|
||||
|
||||
// Main dispatch: SM100 adapted → SM90 → SM80 → default
|
||||
constexpr UniqueByKeyPolicy operator()(const hardware_capability& hw) const {
|
||||
auto p100 = get_sm100();
|
||||
if (p100.items_per_thread > 0) return p100;
|
||||
auto p90 = get_sm90();
|
||||
if (p90.items_per_thread > 0) return p90;
|
||||
auto p80 = get_sm80();
|
||||
if (p80.items_per_thread > 0) return p80;
|
||||
return default_policy();
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
Reference in New Issue
Block a user