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added float4 and double2 #17

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added float4 and double2 #17

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55b9908
added float4 and double2
WillTrojak Dec 1, 2025
1d64a0c
fix alignment bug
WillTrojak Dec 3, 2025
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48 changes: 25 additions & 23 deletions gimmik/cuda.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,8 @@ class CUDAMatMul(MatMul):
platform = 'cuda'
basemeta = {'block': (128, 1, 1), 'width': 1, 'shared': 0,
'dynamic_shared': 0}
vtypes = {'float': {'float2': 2, 'float4': 4},
'double': {'double2': 2}}

def _kernel_generators(self, dtype, dsize, *, compute_capability=None):
# B loading, C streaming kernel
Expand All @@ -27,29 +29,29 @@ def _kernel_generators(self, dtype, dsize, *, compute_capability=None):
meta = {'block': (blkx, ks, 1), 'shared': (ks - 1)*csz*blkx*dsize}
yield ('cstream-ksplit', args, meta)

# At single precision also consider vectorized kernels
if (dtype == 'float' and
self.aligne is not None and self.aligne % 2 == 0):
# Vector B loading, C streaming kernel
args = {'dtype': 'float2', 'width': 2}
meta = {'width': 2}
yield ('cstream', args, meta)

# Vector four-way m-split B streaming, C accumulation kernel
ms, bsz, blkx = 4, 16, 32
args = {'dtype': 'float2', 'width': 2, 'msplit': ms,
'bsz': bsz, 'blockx': blkx}
meta = {'block': (blkx, ms, 1), 'width': 2,
'shared': 2*blkx*bsz*2*dsize}
yield ('bstream-msplit', args, meta)

# Vector two-way k-split B loading, C streaming kernel
ks, csz, blkx = 2, 24, 32
args = {'dtype': 'float2', 'width': 2, 'ksplit': ks,
'csz': csz, 'blockx': blkx}
meta = {'block': (blkx, ks, 1), 'width': 2,
'shared': 2*(ks - 1)*csz*blkx*dsize}
yield ('cstream-ksplit', args, meta)
# Consider some vector types
for vtype, width in self.vtypes[dtype].items():
if self.aligne is not None and self.aligne % width == 0:
# Vector B loading, C streaming kernel
args = {'dtype': vtype, 'width': width}
meta = {'width': width}
yield ('cstream', args, meta)

# Vector four-way m-split B streaming, C accumulation kernel
ms, bsz, blkx = 4, 16, 32
args = {'dtype': vtype, 'width': width, 'msplit': ms,
'bsz': bsz, 'blockx': blkx}
meta = {'block': (blkx, ms, 1), 'width': width,
'shared': width*blkx*bsz*2*dsize}
yield ('bstream-msplit', args, meta)

# Vector two-way k-split B loading, C streaming kernel
ks, csz, blkx = 2, 24, 32
args = {'dtype': vtype, 'width': width, 'ksplit': ks,
'csz': csz, 'blockx': blkx}
meta = {'block': (blkx, ks, 1), 'width': width,
'shared': width*(ks - 1)*csz*blkx*dsize}
yield ('cstream-ksplit', args, meta)

def _process_meta(self, meta):
if self.n is not None:
Expand Down