From 880cf187d87c904f5fe574802ecff99118643f2d Mon Sep 17 00:00:00 2001
From: AlexeyAB <alexeyab84@gmail.com>
Date: Fri, 09 Mar 2018 16:44:46 +0000
Subject: [PATCH] Fixed multi-GPU training for Tensor Cores
---
src/convolutional_kernels.cu | 59 +++++++++++++++++++++++++++--------------------------------
1 files changed, 27 insertions(+), 32 deletions(-)
diff --git a/src/convolutional_kernels.cu b/src/convolutional_kernels.cu
index 9d88a88..44b9a0f 100644
--- a/src/convolutional_kernels.cu
+++ b/src/convolutional_kernels.cu
@@ -135,26 +135,24 @@
// More: http://docs.nvidia.com/deeplearning/sdk/cudnn-developer-guide/index.html#tensor_ops
const size_t input16_size = l.batch*l.c*l.w*l.h;
- static size_t max_input16_size = input16_size;
- static half* input16 = cuda_make_f16_from_f32_array(NULL, max_input16_size);
-
const size_t output16_size = l.batch*l.out_c*l.out_h*l.out_w;
- static size_t max_output16_size = output16_size;
- static half* output16 = cuda_make_f16_from_f32_array(NULL, max_output16_size);
- if (max_input16_size < input16_size) {
- max_input16_size = input16_size;
- cuda_free((float *)input16);
- input16 = cuda_make_f16_from_f32_array(state.input, max_input16_size);
+ if (*state.net.max_input16_size < input16_size) {
+ //printf("\n input16_size: cur = %zu \t max = %zu \n", input16_size, *state.net.max_input16_size);
+ *state.net.max_input16_size = input16_size;
+ if (*state.net.input16_gpu) cuda_free(*state.net.input16_gpu);
+ *state.net.input16_gpu = (float *)cuda_make_f16_from_f32_array(NULL, *state.net.max_input16_size);
}
+ float *input16 = *state.net.input16_gpu;
- if (max_output16_size < output16_size) {
- max_output16_size = output16_size;
- cuda_free((float *)output16);
- output16 = cuda_make_f16_from_f32_array(NULL, max_output16_size);
+ if (*state.net.max_output16_size < output16_size) {
+ *state.net.max_output16_size = output16_size;
+ if (*state.net.output16_gpu) cuda_free(*state.net.output16_gpu);
+ *state.net.output16_gpu = (float *)cuda_make_f16_from_f32_array(NULL, *state.net.max_output16_size);
}
+ float *output16 = *state.net.output16_gpu;
- cuda_convert_f32_to_f16(state.input, input16_size, (float *)input16);
+ cuda_convert_f32_to_f16(state.input, input16_size, input16);
//fill_ongpu(output16_size / 2, 0, (float *)output16, 1);
cudnnConvolutionForward(cudnn_handle(),
@@ -171,7 +169,7 @@
l.dstTensorDesc,
output16);
- cuda_convert_f16_to_f32((float *)output16, output16_size, l.output_gpu);
+ cuda_convert_f16_to_f32(output16, output16_size, l.output_gpu);
#else
@@ -238,27 +236,24 @@
#ifdef CUDNN_HALF
const size_t input16_size = l.batch*l.c*l.w*l.h;
- static size_t max_input16_size = input16_size;
- static half* input16 = cuda_make_f16_from_f32_array(NULL, max_input16_size);
-
const size_t delta16_size = l.batch*l.n*l.out_w*l.out_h;
- static size_t max_delta16_size = delta16_size;
- static half* delta16 = cuda_make_f16_from_f32_array(NULL, max_delta16_size);
-
- if (max_input16_size < input16_size) {
- max_input16_size = input16_size;
- cuda_free((float *)input16);
- input16 = cuda_make_f16_from_f32_array(state.input, max_input16_size);
+
+ if (*state.net.max_input16_size < input16_size) {
+ *state.net.max_input16_size = input16_size;
+ if(*state.net.input16_gpu) cuda_free(*state.net.input16_gpu);
+ *state.net.input16_gpu = (float *)cuda_make_f16_from_f32_array(NULL, *state.net.max_input16_size);
}
+ float *input16 = *state.net.input16_gpu;
- if (max_delta16_size < delta16_size) {
- max_delta16_size = delta16_size;
- cuda_free((float *)delta16);
- delta16 = cuda_make_f16_from_f32_array(NULL, max_delta16_size);
+ if (*state.net.max_output16_size < delta16_size) {
+ *state.net.max_output16_size = delta16_size;
+ if(*state.net.output16_gpu) cuda_free(*state.net.output16_gpu);
+ *state.net.output16_gpu = (float *)cuda_make_f16_from_f32_array(NULL, *state.net.max_output16_size);
}
+ float *delta16 = *state.net.output16_gpu;
- cuda_convert_f32_to_f16(state.input, input16_size, (float *)input16);
- cuda_convert_f32_to_f16(l.delta_gpu, delta16_size, (float *)delta16);
+ cuda_convert_f32_to_f16(state.input, input16_size, input16);
+ cuda_convert_f32_to_f16(l.delta_gpu, delta16_size, delta16);
// convert input: state.input (x), l.delta_gpu (y) from fp32 to fp16
// get output: l.weight_updates_gpu (dw) and convert it to fp32 (ONLY if it is fp16)
@@ -305,7 +300,7 @@
l.dsrcTensorDesc,
input16); // state.delta);
- cuda_convert_f16_to_f32((float *)input16, input16_size, state.delta);
+ cuda_convert_f16_to_f32(input16, input16_size, state.delta);
if (l.binary || l.xnor) swap_binary(&l);
if (l.xnor) gradient_array_ongpu(original_input, l.batch*l.c*l.h*l.w, HARDTAN, state.delta);
--
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