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Copy pathtestcase.cpp
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272 lines (221 loc) · 9.8 KB
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/*
* SPDX-FileCopyrightText: Copyright (c) 2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "common.h"
#include "output.h"
#include "testcase.h"
#include "inline_common.h"
Testcase::Testcase(std::string key, std::string desc) :
key(std::move(key)), desc(std::move(desc))
{}
std::string Testcase::testKey() { return key; }
std::string Testcase::testDesc() { return desc; }
bool Testcase::filterHasAccessiblePeerPairs() {
int deviceCount = 0;
CU_ASSERT(cuDeviceGetCount(&deviceCount));
for (int currentDevice = 0; currentDevice < deviceCount; currentDevice++) {
for (int peer = 0; peer < deviceCount; peer++) {
int canAccessPeer = 0;
if (peer == currentDevice) {
continue;
}
CU_ASSERT(cuDeviceCanAccessPeer(&canAccessPeer, currentDevice, peer));
if (canAccessPeer) {
return true;
}
}
}
return false;
}
bool Testcase::filterSupportsMulticast() {
int deviceCount = 0;
CU_ASSERT(cuDeviceGetCount(&deviceCount));
for (int currentDevice = 0; currentDevice < deviceCount; currentDevice++) {
CUdevice dev;
CU_ASSERT(cuDeviceGet(&dev, currentDevice));
int supportsMulticast = 0;
CU_ASSERT(cuDeviceGetAttribute(&supportsMulticast, CU_DEVICE_ATTRIBUTE_MULTICAST_SUPPORTED, dev));
if (!supportsMulticast) {
return false;
}
}
return true;
}
#ifdef MULTINODE
// Each MPI rank handles one GPU, so we simply have to check if we have more than 1 process
bool Testcase::filterHasMultipleGPUsMultinode() {
return worldSize > 1;
}
#endif
void Testcase::latencyHelper(const MemcpyBuffer &dataBuffer, bool measureDeviceToDeviceLatency) {
uint64_t n_ptrs = dataBuffer.getBufferSize() / sizeof(struct LatencyNode);
if (measureDeviceToDeviceLatency) {
// For device-to-device latency, create and initialize pattern on device
for (uint64_t i = 0; i < n_ptrs; i++) {
struct LatencyNode node;
size_t nextOffset = ((i + strideLen) % n_ptrs) * sizeof(struct LatencyNode);
// Set up pattern with device addresses
node.next = (struct LatencyNode*)(dataBuffer.getBuffer() + nextOffset);
CU_ASSERT(cuMemcpyHtoD(dataBuffer.getBuffer() + i*sizeof(struct LatencyNode),
&node, sizeof(struct LatencyNode)));
}
} else {
// For host-device latency, initialize pattern with host addresses
struct LatencyNode* hostMem = (struct LatencyNode*)dataBuffer.getBuffer();
for (uint64_t i = 0; i < n_ptrs; i++) {
hostMem[i].next = &hostMem[(i + strideLen) % n_ptrs];
}
}
}
void Testcase::allToOneHelper(unsigned long long size, MemcpyOperation &memcpyInstance, PeerValueMatrix<double> &bandwidthValues, bool isRead) {
std::vector<const DeviceBuffer*> allSrcBuffers;
// allocate all src nodes up front, re-use to avoid reallocation
for (int deviceId = 0; deviceId < deviceCount; deviceId++) {
allSrcBuffers.push_back(new DeviceBuffer(size, deviceId));
}
for (int dstDeviceId = 0; dstDeviceId < deviceCount; dstDeviceId++) {
std::vector<const MemcpyBuffer*> dstBuffers;
std::vector<const MemcpyBuffer*> srcBuffers;
for (int srcDeviceId = 0; srcDeviceId < deviceCount; srcDeviceId++) {
if (srcDeviceId == dstDeviceId) {
continue;
}
DeviceBuffer* dstBuffer = new DeviceBuffer(size, dstDeviceId);
if (!dstBuffer->enablePeerAcess(*allSrcBuffers[srcDeviceId])) {
delete dstBuffer;
continue;
}
srcBuffers.push_back(allSrcBuffers[srcDeviceId]);
dstBuffers.push_back(dstBuffer);
}
// If no peer GPUs, skip measurements.
if (!srcBuffers.empty()) {
if (isRead) {
// swap dst and src for read tests
bandwidthValues.value(0, dstDeviceId) = memcpyInstance.doMemcpy(dstBuffers, srcBuffers);
} else {
bandwidthValues.value(0, dstDeviceId) = memcpyInstance.doMemcpy(srcBuffers, dstBuffers);
}
}
for (auto node : dstBuffers) {
delete node;
}
}
for (auto node : allSrcBuffers) {
delete node;
}
}
void Testcase::oneToAllHelper(unsigned long long size, MemcpyOperation &memcpyInstance, PeerValueMatrix<double> &bandwidthValues, bool isRead) {
std::vector<const DeviceBuffer*> allDstBuffers;
// allocate all src nodes up front, re-use to avoid reallocation
for (int deviceId = 0; deviceId < deviceCount; deviceId++) {
allDstBuffers.push_back(new DeviceBuffer(size, deviceId));
}
for (int srcDeviceId = 0; srcDeviceId < deviceCount; srcDeviceId++) {
std::vector<const MemcpyBuffer*> dstBuffers;
std::vector<const MemcpyBuffer*> srcBuffers;
for (int dstDeviceId = 0; dstDeviceId < deviceCount; dstDeviceId++) {
if (srcDeviceId == dstDeviceId) {
continue;
}
DeviceBuffer* srcBuffer = new DeviceBuffer(size, srcDeviceId);
if (!srcBuffer->enablePeerAcess(*allDstBuffers[dstDeviceId])) {
delete srcBuffer;
continue;
}
srcBuffers.push_back(srcBuffer);
dstBuffers.push_back(allDstBuffers[dstDeviceId]);
}
// If no peer GPUs, skip measurements.
if ( !srcBuffers.empty() ) {
if (isRead) {
// swap dst and src for read tests
bandwidthValues.value(0, srcDeviceId) = memcpyInstance.doMemcpy(dstBuffers, srcBuffers);
} else {
bandwidthValues.value(0, srcDeviceId) = memcpyInstance.doMemcpy(srcBuffers, dstBuffers);
}
}
for (auto node : srcBuffers) {
delete node;
}
}
for (auto node : allDstBuffers) {
delete node;
}
}
void Testcase::allHostHelper(unsigned long long size, MemcpyOperation &memcpyInstance, PeerValueMatrix<double> &bandwidthValues, bool sourceIsHost) {
for (int deviceId = 0; deviceId < deviceCount; deviceId++) {
std::vector<const MemcpyBuffer*> deviceBuffers;
std::vector<const MemcpyBuffer*> hostBuffers;
deviceBuffers.push_back(new DeviceBuffer(size, deviceId));
hostBuffers.push_back(new HostBuffer(size, deviceId));
for (int interferenceDeviceId = 0; interferenceDeviceId < deviceCount; interferenceDeviceId++) {
if (interferenceDeviceId == deviceId) {
continue;
}
// Double the size of the interference copy to ensure it interferes correctly
deviceBuffers.push_back(new DeviceBuffer(size * 2, interferenceDeviceId));
hostBuffers.push_back(new HostBuffer(size * 2, interferenceDeviceId));
}
if (sourceIsHost) {
bandwidthValues.value(0, deviceId) = memcpyInstance.doMemcpy(hostBuffers, deviceBuffers);
} else {
bandwidthValues.value(0, deviceId) = memcpyInstance.doMemcpy(deviceBuffers, hostBuffers);
}
for (auto node : deviceBuffers) {
delete node;
}
for (auto node : hostBuffers) {
delete node;
}
}
}
void Testcase::allHostBidirHelper(unsigned long long size, MemcpyOperation &memcpyInstance, PeerValueMatrix<double> &bandwidthValues, bool sourceIsHost) {
for (int deviceId = 0; deviceId < deviceCount; deviceId++) {
std::vector<const MemcpyBuffer*> srcBuffers;
std::vector<const MemcpyBuffer*> dstBuffers;
if (sourceIsHost) {
srcBuffers.push_back(new HostBuffer(size, deviceId));
dstBuffers.push_back(new DeviceBuffer(size, deviceId));
// Double the size of the interference copy to ensure it interferes correctly
srcBuffers.push_back(new DeviceBuffer(size * 2, deviceId));
dstBuffers.push_back(new HostBuffer(size * 2, deviceId));
} else {
srcBuffers.push_back(new DeviceBuffer(size, deviceId));
dstBuffers.push_back(new HostBuffer(size, deviceId));
// Double the size of the interference copy to ensure it interferes correctly
srcBuffers.push_back(new HostBuffer(size * 2, deviceId));
dstBuffers.push_back(new DeviceBuffer(size * 2, deviceId));
}
for (int interferenceDeviceId = 0; interferenceDeviceId < deviceCount; interferenceDeviceId++) {
if (interferenceDeviceId == deviceId) {
continue;
}
// Double the size of the interference copy to ensure it interferes correctly
srcBuffers.push_back(new DeviceBuffer(size * 2, interferenceDeviceId));
dstBuffers.push_back(new HostBuffer(size * 2, interferenceDeviceId));
srcBuffers.push_back(new HostBuffer(size * 2, interferenceDeviceId));
dstBuffers.push_back(new DeviceBuffer(size * 2, interferenceDeviceId));
}
bandwidthValues.value(0, deviceId) = memcpyInstance.doMemcpy(srcBuffers, dstBuffers);
for (auto node : srcBuffers) {
delete node;
}
for (auto node : dstBuffers) {
delete node;
}
}
}
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