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[ROCm] Restore Wave64 warp size for all gfx9 targets #2059

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Merged
matthewdouglas merged 1 commit into from
Aug 26, 2026
+3 −2
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[ROCm] Restore Wave64 warp size for all gfx9 targets #2059

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5 changes: 3 additions & 2 deletions csrc/common.cuh
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Original file line number Diff line number Diff line change
Expand Up @@ -31,8 +31,9 @@
// Warp size

#if BNB_HIP
#if IS_CDNA
#define BNB_WARP_SIZE 64 // CDNA
// All of gfx9 is Wave64, including the GCN5 parts IS_CDNA omits.
#if defined(__GFX9__)
#define BNB_WARP_SIZE 64 // GCN5 / CDNA
#else
#define BNB_WARP_SIZE 32 // RDNA
#endif
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