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Add avx512 core instructions check #27732

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merged 4 commits into from
Sep 30, 2020
Merged

Add avx512 core instructions check #27732

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d347144
Add avx instructions check
wozna Sep 29, 2020
b9966ea
Small fix
wozna Sep 29, 2020
e883585
Change function name
wozna Sep 30, 2020
11670ff
Change uint to unsigned int
wozna Sep 30, 2020
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7 changes: 7 additions & 0 deletions paddle/fluid/platform/cpu_info.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -164,6 +164,13 @@ bool MayIUse(const cpu_isa_t cpu_isa) {
// AVX512F: EBX Bit 16
int avx512f_mask = (1 << 16);
return (reg[1] & avx512f_mask) != 0;
} else if (cpu_isa == avx512_core) {
unsigned int avx512f_mask = (1 << 16);
unsigned int avx512dq_mask = (1 << 17);
unsigned int avx512bw_mask = (1 << 30);
unsigned int avx512vl_mask = (1 << 31);
return ((reg[1] & avx512f_mask) && (reg[1] & avx512dq_mask) &&
(reg[1] & avx512bw_mask) && (reg[1] & avx512vl_mask));
}
}
#endif
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12 changes: 12 additions & 0 deletions paddle/fluid/pybind/pybind.cc
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Expand Up @@ -142,6 +142,17 @@ bool IsCompiledWithMKLDNN() {
#endif
}

bool SupportsBfloat16() {
#ifndef PADDLE_WITH_MKLDNN
return false;
#else
if (platform::MayIUse(platform::cpu_isa_t::avx512_core))
return true;
else
return false;
#endif
}

bool IsCompiledWithBrpc() {
#ifndef PADDLE_WITH_DISTRIBUTE
return false;
Expand Down Expand Up @@ -1661,6 +1672,7 @@ All parameter, weight, gradient are variables in Paddle.
m.def("is_compiled_with_cuda", IsCompiledWithCUDA);
m.def("is_compiled_with_xpu", IsCompiledWithXPU);
m.def("is_compiled_with_mkldnn", IsCompiledWithMKLDNN);
m.def("supports_bfloat16", SupportsBfloat16);
m.def("is_compiled_with_brpc", IsCompiledWithBrpc);
m.def("is_compiled_with_dist", IsCompiledWithDIST);
m.def("_cuda_synchronize", [](const platform::CUDAPlace &place) {
Expand Down
5 changes: 3 additions & 2 deletions python/paddle/fluid/tests/unittests/mkldnn/test_conv2d_bf16_mkldnn_op.py
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Expand Up @@ -19,7 +19,7 @@
import struct

import paddle.fluid.core as core
from paddle.fluid.tests.unittests.op_test import OpTest, skip_check_grad_ci, convert_float_to_uint16
from paddle.fluid.tests.unittests.op_test import OpTest, convert_float_to_uint16
from paddle.fluid.tests.unittests.test_conv2d_op import conv2d_forward_naive, TestConv2dOp


Expand Down Expand Up @@ -205,4 +205,5 @@ def init_group(self):


if __name__ == '__main__':
unittest.main()
if core.supports_bfloat16():
unittest.main()