carrot/tinygrad_repo/extra/gemm/real_pmatmul.py

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import time
from tinygrad import Tensor, Device, TinyJit
from tinygrad.helpers import getenv
if __name__ == "__main__":
DEVS = [f"NV:{i}" for i in range(getenv("GPUS", 2))]
N = getenv("N", 8192)
A = Tensor.rand(N, N).shard(DEVS, 0).realize()
B = Tensor.rand(N, N).shard(DEVS, 1).realize()
print("***** MUL *****")
jmatmul = TinyJit(Tensor.dot)
for i in range(10):
Device["NV:0"].synchronize()
Device["NV:1"].synchronize()
st = time.perf_counter()
jmatmul(A, B)
Device["NV:0"].synchronize()
Device["NV:1"].synchronize()
et = time.perf_counter()
print(f"{(N*N*N*2*1e-12)/(et-st):.2f} TFLOPS")