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make bilinear interpolate stable. #48644

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merged 2 commits into from
Dec 6, 2022
Merged

make bilinear interpolate stable. #48644

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0384ea9
make bilinear interpolate stable.
2742195759 Dec 2, 2022
2d6e040
fix code
2742195759 Dec 2, 2022
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42 changes: 28 additions & 14 deletions paddle/phi/kernels/gpu/interpolate_grad_kernel.cu
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,8 @@
#include "paddle/phi/kernels/funcs/math_function.h"
#include "paddle/phi/kernels/primitive/datamover_primitives.h"

DECLARE_bool(cudnn_deterministic);

namespace phi {

template <typename T>
Expand Down Expand Up @@ -1034,6 +1036,12 @@ static void Interpolate2DCUDABwd(
#endif

if (optimize_flag & is_nchw) {
if (FLAGS_cudnn_deterministic) {
VLOG(2)
<< "Run grad kernel of bilinear interpolate 2d with single thread.";
config.block_per_grid = 1;
config.thread_per_block = 1;
}
KeBilinearInterpBwShareMemory<T><<<config.block_per_grid,
config.thread_per_block,
0,
Expand All @@ -1052,21 +1060,27 @@ static void Interpolate2DCUDABwd(
} else if (!optimize_flag & is_nchw) {
const int num_kernels = n * c * out_h * out_w;
const int num_threads = std::min(dev_ctx.GetMaxThreadsPerBlock(), 1024);
int block_per_grid = backends::gpu::DivUp(num_kernels, num_threads);
int thread_per_block = num_threads;
if (FLAGS_cudnn_deterministic) {
VLOG(2)
<< "Run grad kernel of bilinear interpolate 2d with single thread.";
block_per_grid = 1;
thread_per_block = 1;
}
KeBilinearInterpNCHWBw<T>
<<<backends::gpu::DivUp(num_kernels, num_threads),
num_threads,
0,
dev_ctx.stream()>>>(input_grad_data,
in_h,
in_w,
out_h,
out_w,
n,
c,
ratio_h,
ratio_w,
output_grad_data,
align_type_value);
<<<block_per_grid, thread_per_block, 0, dev_ctx.stream()>>>(
input_grad_data,
in_h,
in_w,
out_h,
out_w,
n,
c,
ratio_h,
ratio_w,
output_grad_data,
align_type_value);
} else {
int64_t cw = c * out_w;
auto interp_divmods = funcs::FastDivModForInterpolate(c, out_chw, cw);
Expand Down