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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /opencl/source/opencl_device.cxx
parentInitial commit. (diff)
downloadlibreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz
libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'opencl/source/opencl_device.cxx')
-rw-r--r--opencl/source/opencl_device.cxx611
1 files changed, 611 insertions, 0 deletions
diff --git a/opencl/source/opencl_device.cxx b/opencl/source/opencl_device.cxx
new file mode 100644
index 000000000..ca9f4f43b
--- /dev/null
+++ b/opencl/source/opencl_device.cxx
@@ -0,0 +1,611 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <float.h>
+#include <iostream>
+#include <memory>
+#include <string_view>
+#include <vector>
+#include <algorithm>
+
+#include <comphelper/random.hxx>
+#include <o3tl/safeint.hxx>
+#include <opencl/openclconfig.hxx>
+#include <opencl/platforminfo.hxx>
+#include <sal/log.hxx>
+#include <rtl/math.hxx>
+#include <tools/time.hxx>
+
+#include <opencl/OpenCLZone.hxx>
+
+#include <opencl_device.hxx>
+#include <opencl_device_selection.h>
+
+#define INPUTSIZE 15360
+#define OUTPUTSIZE 15360
+
+#define STRINGIFY(...) #__VA_ARGS__"\n"
+
+namespace {
+
+void DS_CHECK_STATUS(cl_int status, char const * name) {
+ if (CL_SUCCESS != status)
+ {
+ SAL_INFO("opencl.device", "Error code is " << status << " at " << name);
+ }
+}
+
+bool bIsDeviceSelected = false;
+ds_device selectedDevice;
+
+struct LibreOfficeDeviceEvaluationIO
+{
+ std::vector<double> input0;
+ std::vector<double> input1;
+ std::vector<double> input2;
+ std::vector<double> input3;
+ std::vector<double> output;
+ tools::ULong inputSize;
+ tools::ULong outputSize;
+};
+
+const char* source = STRINGIFY(
+\n#if defined(KHR_DP_EXTENSION)
+\n#pragma OPENCL EXTENSION cl_khr_fp64 : enable
+\n#elif defined(AMD_DP_EXTENSION)
+\n#pragma OPENCL EXTENSION cl_amd_fp64 : enable
+\n#endif
+ \n
+ int isNan(fp_t a) { return a != a; }
+ fp_t fsum(fp_t a, fp_t b) { return a + b; }
+
+ fp_t fAverage(__global fp_t* input)
+{
+ fp_t sum = 0;
+ int count = 0;
+ for (int i = 0; i < INPUTSIZE; i++)
+ {
+ if (!isNan(input[i]))
+ {
+ sum = fsum(input[i], sum);
+ count += 1;
+ }
+ }
+ return sum / (fp_t)count;
+}
+ fp_t fMin(__global fp_t* input)
+{
+ fp_t min = MAXFLOAT;
+ for (int i = 0; i < INPUTSIZE; i++)
+ {
+ if (!isNan(input[i]))
+ {
+ min = fmin(input[i], min);
+ }
+ }
+ return min;
+}
+ fp_t fSoP(__global fp_t* input0, __global fp_t* input1)
+{
+ fp_t sop = 0.0;
+ for (int i = 0; i < INPUTSIZE; i++)
+ {
+ sop += (isNan(input0[i]) ? 0 : input0[i]) * (isNan(input1[i]) ? 0 : input1[i]);
+ }
+ return sop;
+}
+ __kernel void DynamicKernel(
+ __global fp_t* result, __global fp_t* input0, __global fp_t* input1, __global fp_t* input2, __global fp_t* input3)
+{
+ int gid0 = get_global_id(0);
+ fp_t tmp0 = fAverage(input0);
+ fp_t tmp1 = fMin(input1) * fSoP(input2, input3);
+ result[gid0] = fsum(tmp0, tmp1);
+}
+ );
+
+size_t sourceSize[] = { strlen(source) };
+
+/* Random number generator */
+double random(double min, double max)
+{
+ if (rtl::math::approxEqual(min, max))
+ return min;
+ return comphelper::rng::uniform_real_distribution(min, max);
+}
+
+/* Populate input */
+void populateInput(std::unique_ptr<LibreOfficeDeviceEvaluationIO> const & testData)
+{
+ double* input0 = testData->input0.data();
+ double* input1 = testData->input1.data();
+ double* input2 = testData->input2.data();
+ double* input3 = testData->input3.data();
+ for (tools::ULong i = 0; i < testData->inputSize; i++)
+ {
+ input0[i] = random(0, i);
+ input1[i] = random(0, i);
+ input2[i] = random(0, i);
+ input3[i] = random(0, i);
+ }
+}
+
+/* Evaluate devices */
+ds_status evaluateScoreForDevice(ds_device& rDevice, std::unique_ptr<LibreOfficeDeviceEvaluationIO> const & testData)
+{
+ if (rDevice.eType == DeviceType::OpenCLDevice)
+ {
+ /* Evaluating an OpenCL device */
+ SAL_INFO("opencl.device", "Device: \"" << rDevice.sDeviceName << "\" (OpenCL) evaluation...");
+ cl_int clStatus;
+
+ /* Check for 64-bit float extensions */
+ std::unique_ptr<char[]> aExtInfo;
+ {
+ size_t aDevExtInfoSize = 0;
+
+ OpenCLZone zone;
+ clStatus = clGetDeviceInfo(rDevice.aDeviceID, CL_DEVICE_EXTENSIONS, 0, nullptr, &aDevExtInfoSize);
+ DS_CHECK_STATUS(clStatus, "evaluateScoreForDevice::clGetDeviceInfo");
+
+ aExtInfo.reset(new char[aDevExtInfoSize]);
+ clStatus = clGetDeviceInfo(rDevice.aDeviceID, CL_DEVICE_EXTENSIONS, sizeof(char) * aDevExtInfoSize, aExtInfo.get(), nullptr);
+ DS_CHECK_STATUS(clStatus, "evaluateScoreForDevice::clGetDeviceInfo");
+ }
+
+ bool bKhrFp64Flag = false;
+ bool bAmdFp64Flag = false;
+ const char* buildOption = nullptr;
+ std::string tmpStr("-Dfp_t=double -Dfp_t4=double4 -Dfp_t16=double16 -DINPUTSIZE=");
+ std::ostringstream tmpOStrStr;
+ tmpOStrStr << std::dec << INPUTSIZE;
+ tmpStr.append(tmpOStrStr.str());
+
+ if ((std::string(aExtInfo.get())).find("cl_khr_fp64") != std::string::npos)
+ {
+ bKhrFp64Flag = true;
+ //buildOption = "-D KHR_DP_EXTENSION -Dfp_t=double -Dfp_t4=double4 -Dfp_t16=double16";
+ tmpStr.append(" -DKHR_DP_EXTENSION");
+ buildOption = tmpStr.c_str();
+ SAL_INFO("opencl.device", "... has cl_khr_fp64");
+ }
+ else if ((std::string(aExtInfo.get())).find("cl_amd_fp64") != std::string::npos)
+ {
+ bAmdFp64Flag = true;
+ //buildOption = "-D AMD_DP_EXTENSION -Dfp_t=double -Dfp_t4=double4 -Dfp_t16=double16";
+ tmpStr.append(" -DAMD_DP_EXTENSION");
+ buildOption = tmpStr.c_str();
+ SAL_INFO("opencl.device", "... has cl_amd_fp64");
+ }
+
+ if (!bKhrFp64Flag && !bAmdFp64Flag)
+ {
+ /* No 64-bit float support */
+ rDevice.fTime = DBL_MAX;
+ rDevice.bErrors = false;
+ SAL_INFO("opencl.device", "... no fp64 support");
+ }
+ else
+ {
+ /* 64-bit float support present */
+
+ OpenCLZone zone;
+
+ /* Create context and command queue */
+ cl_context clContext = clCreateContext(nullptr, 1, &rDevice.aDeviceID, nullptr, nullptr, &clStatus);
+ DS_CHECK_STATUS(clStatus, "evaluateScoreForDevice::clCreateContext");
+ cl_command_queue clQueue = clCreateCommandQueue(clContext, rDevice.aDeviceID, 0, &clStatus);
+ DS_CHECK_STATUS(clStatus, "evaluateScoreForDevice::clCreateCommandQueue");
+
+ /* Build program */
+ cl_program clProgram = clCreateProgramWithSource(clContext, 1, &source, sourceSize, &clStatus);
+ DS_CHECK_STATUS(clStatus, "evaluateScoreForDevice::clCreateProgramWithSource");
+ clStatus = clBuildProgram(clProgram, 1, &rDevice.aDeviceID, buildOption, nullptr, nullptr);
+ DS_CHECK_STATUS(clStatus, "evaluateScoreForDevice::clBuildProgram");
+ if (CL_SUCCESS != clStatus)
+ {
+ /* Build program failed */
+ size_t length;
+ char* buildLog;
+ clStatus = clGetProgramBuildInfo(clProgram, rDevice.aDeviceID, CL_PROGRAM_BUILD_LOG, 0, nullptr, &length);
+ buildLog = static_cast<char*>(malloc(length));
+ clGetProgramBuildInfo(clProgram, rDevice.aDeviceID, CL_PROGRAM_BUILD_LOG, length, buildLog, &length);
+ SAL_INFO("opencl.device", "Build Errors:\n" << buildLog);
+ free(buildLog);
+
+ rDevice.fTime = DBL_MAX;
+ rDevice.bErrors = true;
+ }
+ else
+ {
+ /* Build program succeeded */
+ sal_uInt64 kernelTime = tools::Time::GetMonotonicTicks();
+
+ /* Run kernel */
+ cl_kernel clKernel = clCreateKernel(clProgram, "DynamicKernel", &clStatus);
+ DS_CHECK_STATUS(clStatus, "evaluateScoreForDevice::clCreateKernel");
+ cl_mem clResult = clCreateBuffer(clContext, CL_MEM_WRITE_ONLY | CL_MEM_USE_HOST_PTR, sizeof(cl_double) * testData->outputSize, testData->output.data(), &clStatus);
+ DS_CHECK_STATUS(clStatus, "evaluateScoreForDevice::clCreateBuffer::clResult");
+ cl_mem clInput0 = clCreateBuffer(clContext, CL_MEM_READ_ONLY | CL_MEM_USE_HOST_PTR, sizeof(cl_double) * testData->inputSize, testData->input0.data(), &clStatus);
+ DS_CHECK_STATUS(clStatus, "evaluateScoreForDevice::clCreateBuffer::clInput0");
+ cl_mem clInput1 = clCreateBuffer(clContext, CL_MEM_READ_ONLY | CL_MEM_USE_HOST_PTR, sizeof(cl_double) * testData->inputSize, testData->input1.data(), &clStatus);
+ DS_CHECK_STATUS(clStatus, "evaluateScoreForDevice::clCreateBuffer::clInput1");
+ cl_mem clInput2 = clCreateBuffer(clContext, CL_MEM_READ_ONLY | CL_MEM_USE_HOST_PTR, sizeof(cl_double) * testData->inputSize, testData->input2.data(), &clStatus);
+ DS_CHECK_STATUS(clStatus, "evaluateScoreForDevice::clCreateBuffer::clInput2");
+ cl_mem clInput3 = clCreateBuffer(clContext, CL_MEM_READ_ONLY | CL_MEM_USE_HOST_PTR, sizeof(cl_double) * testData->inputSize, testData->input3.data(), &clStatus);
+ DS_CHECK_STATUS(clStatus, "evaluateScoreForDevice::clCreateBuffer::clInput3");
+ clStatus = clSetKernelArg(clKernel, 0, sizeof(cl_mem), static_cast<void*>(&clResult));
+ DS_CHECK_STATUS(clStatus, "evaluateScoreForDevice::clSetKernelArg::clResult");
+ clStatus = clSetKernelArg(clKernel, 1, sizeof(cl_mem), static_cast<void*>(&clInput0));
+ DS_CHECK_STATUS(clStatus, "evaluateScoreForDevice::clSetKernelArg::clInput0");
+ clStatus = clSetKernelArg(clKernel, 2, sizeof(cl_mem), static_cast<void*>(&clInput1));
+ DS_CHECK_STATUS(clStatus, "evaluateScoreForDevice::clSetKernelArg::clInput1");
+ clStatus = clSetKernelArg(clKernel, 3, sizeof(cl_mem), static_cast<void*>(&clInput2));
+ DS_CHECK_STATUS(clStatus, "evaluateScoreForDevice::clSetKernelArg::clInput2");
+ clStatus = clSetKernelArg(clKernel, 4, sizeof(cl_mem), static_cast<void*>(&clInput3));
+ DS_CHECK_STATUS(clStatus, "evaluateScoreForDevice::clSetKernelArg::clInput3");
+ size_t globalWS[1] = { testData->outputSize };
+ size_t const localSize[1] = { 64 };
+ clStatus = clEnqueueNDRangeKernel(clQueue, clKernel, 1, nullptr, globalWS, localSize, 0, nullptr, nullptr);
+ DS_CHECK_STATUS(clStatus, "evaluateScoreForDevice::clEnqueueNDRangeKernel");
+ clFinish(clQueue);
+ clReleaseMemObject(clInput3);
+ clReleaseMemObject(clInput2);
+ clReleaseMemObject(clInput1);
+ clReleaseMemObject(clInput0);
+ clReleaseMemObject(clResult);
+ clReleaseKernel(clKernel);
+
+ rDevice.fTime = tools::Time::GetMonotonicTicks() - kernelTime;
+ rDevice.bErrors = false;
+ }
+
+ clReleaseProgram(clProgram);
+ clReleaseCommandQueue(clQueue);
+ clReleaseContext(clContext);
+ }
+ }
+ else
+ {
+ /* Evaluating a Native CPU device */
+ SAL_INFO("opencl.device", "Device: \"CPU\" (Native) evaluation...");
+ sal_uInt64 kernelTime = tools::Time::GetMonotonicTicks();
+
+ tools::ULong j;
+ for (j = 0; j < testData->outputSize; j++)
+ {
+ double fAverage = 0.0f;
+ double fMin = DBL_MAX;
+ double fSoP = 0.0f;
+ for (tools::ULong i = 0; i < testData->inputSize; i++)
+ {
+ fAverage += testData->input0[i];
+ fMin = std::min(fMin, testData->input1[i]);
+ fSoP += testData->input2[i] * testData->input3[i];
+ }
+ fAverage /= testData->inputSize;
+ testData->output[j] = fAverage + (fMin * fSoP);
+ // Don't run for much longer than one second
+ if (j > 0 && j % 100 == 0)
+ {
+ rDevice.fTime = tools::Time::GetMonotonicTicks() - kernelTime;
+ if (rDevice.fTime >= 1)
+ break;
+ }
+ }
+
+ rDevice.fTime = tools::Time::GetMonotonicTicks() - kernelTime;
+
+ // Scale time to how long it would have taken to go all the way to outputSize
+ rDevice.fTime /= (static_cast<double>(j) / testData->outputSize);
+
+ // InterpretTail - the S/W fallback is nothing like as efficient
+ // as any good openCL implementation: no SIMD, tons of branching
+ // in the inner loops etc. Generously characterise it as only 10x
+ // slower than the above.
+ rDevice.fTime *= 10.0;
+ rDevice.bErrors = false;
+ }
+ return DS_SUCCESS;
+}
+
+ds_status profileDevices(std::unique_ptr<ds_profile> const & pProfile, std::unique_ptr<LibreOfficeDeviceEvaluationIO> const & pTestData)
+{
+ ds_status status = DS_SUCCESS;
+
+ if (!pProfile)
+ return DS_INVALID_PROFILE;
+
+ for (ds_device& rDevice : pProfile->devices)
+ {
+ ds_status evaluatorStatus = evaluateScoreForDevice(rDevice, pTestData);
+ if (evaluatorStatus != DS_SUCCESS)
+ {
+ status = evaluatorStatus;
+ return status;
+ }
+ }
+ return status;
+}
+
+/* Pick best device */
+int pickBestDevice(std::unique_ptr<ds_profile> const & profile)
+{
+ double bestScore = DBL_MAX;
+
+ int nBestDeviceIndex = -1;
+
+ for (std::vector<ds_device>::size_type d = 0; d < profile->devices.size();
+ d++)
+ {
+ ds_device& device = profile->devices[d];
+
+ // Check denylist and allowlist for actual devices
+ if (device.eType == DeviceType::OpenCLDevice)
+ {
+ // There is a silly impedance mismatch here. Why do we
+ // need two different ways to describe an OpenCL platform
+ // and an OpenCL device driver?
+
+ OpenCLPlatformInfo aPlatform;
+ OpenCLDeviceInfo aDevice;
+
+ // We know that only the below fields are used by checkForKnownBadCompilers()
+ aPlatform.maVendor = OStringToOUString(device.sPlatformVendor, RTL_TEXTENCODING_UTF8);
+ aDevice.maName = OStringToOUString(device.sDeviceName, RTL_TEXTENCODING_UTF8);
+ aDevice.maDriver = OStringToOUString(device.sDriverVersion, RTL_TEXTENCODING_UTF8);
+
+ // If denylisted or not allowlisted, ignore it
+ if (OpenCLConfig::get().checkImplementation(aPlatform, aDevice))
+ {
+ SAL_INFO("opencl.device", "Device[" << d << "] " << device.sDeviceName << " is denylisted or not allowlisted");
+ device.fTime = DBL_MAX;
+ device.bErrors = false;
+ }
+ }
+
+ double fScore = DBL_MAX;
+ if (device.fTime >= 0.0
+ || rtl::math::approxEqual(device.fTime, DBL_MAX))
+ {
+ fScore = device.fTime;
+ }
+ else
+ {
+ SAL_INFO("opencl.device", "Unusual null score");
+ }
+
+ if (device.eType == DeviceType::OpenCLDevice)
+ {
+ SAL_INFO("opencl.device", "Device[" << d << "] " << device.sDeviceName << " (OpenCL) score is " << fScore);
+ }
+ else
+ {
+ SAL_INFO("opencl.device", "Device[" << d << "] CPU (Native) score is " << fScore);
+ }
+ if (fScore < bestScore)
+ {
+ bestScore = fScore;
+ nBestDeviceIndex = d;
+ }
+ }
+ if (nBestDeviceIndex != -1 && profile->devices[nBestDeviceIndex].eType == DeviceType::OpenCLDevice)
+ {
+ SAL_INFO("opencl.device", "Selected Device[" << nBestDeviceIndex << "]: " << profile->devices[nBestDeviceIndex].sDeviceName << "(OpenCL).");
+ }
+ else
+ {
+ SAL_INFO("opencl.device", "Selected Device[" << nBestDeviceIndex << "]: CPU (Native).");
+ }
+ return nBestDeviceIndex;
+}
+
+/* Return device ID for matching device name */
+int matchDevice(std::unique_ptr<ds_profile> const & profile, const char* deviceName)
+{
+ int deviceMatch = -1;
+ for (size_t d = 0; d < profile->devices.size() - 1; d++)
+ {
+ if (profile->devices[d].sDeviceName.indexOf(deviceName) != -1)
+ deviceMatch = d;
+ }
+ if (std::string("NATIVE_CPU").find(deviceName) != std::string::npos)
+ deviceMatch = profile->devices.size() - 1;
+ return deviceMatch;
+}
+
+class LogWriter
+{
+private:
+ SvFileStream maStream;
+public:
+ explicit LogWriter(OUString const & aFileName)
+ : maStream(aFileName, StreamMode::WRITE)
+ {}
+
+ void text(std::string_view rText)
+ {
+ maStream.WriteOString(rText);
+ maStream.WriteChar('\n');
+ }
+
+ void log(std::string_view rKey, std::string_view rValue)
+ {
+ maStream.WriteOString(rKey);
+ maStream.WriteCharPtr(": ");
+ maStream.WriteOString(rValue);
+ maStream.WriteChar('\n');
+ }
+
+ void log(std::string_view rKey, int rValue)
+ {
+ log(rKey, OString::number(rValue));
+ }
+
+ void log(std::string_view rKey, bool rValue)
+ {
+ log(rKey, OString::boolean(rValue));
+ }
+};
+
+
+void writeDevicesLog(std::unique_ptr<ds_profile> const & rProfile, std::u16string_view sProfilePath, int nSelectedIndex)
+{
+ OUString aCacheFile(OUString::Concat(sProfilePath) + "opencl_devices.log");
+ LogWriter aWriter(aCacheFile);
+
+ int nIndex = 0;
+
+ for (const ds_device& rDevice : rProfile->devices)
+ {
+ if (rDevice.eType == DeviceType::OpenCLDevice)
+ {
+ aWriter.log("Device Index", nIndex);
+ aWriter.log(" Selected", nIndex == nSelectedIndex);
+ aWriter.log(" Device Name", rDevice.sDeviceName);
+ aWriter.log(" Device Vendor", rDevice.sDeviceVendor);
+ aWriter.log(" Device Version", rDevice.sDeviceVersion);
+ aWriter.log(" Driver Version", rDevice.sDriverVersion);
+ aWriter.log(" Device Type", rDevice.sDeviceType);
+ aWriter.log(" Device Extensions", rDevice.sDeviceExtensions);
+ aWriter.log(" Device OpenCL C Version", rDevice.sDeviceOpenCLVersion);
+
+ aWriter.log(" Device Available", rDevice.bDeviceAvailable);
+ aWriter.log(" Device Compiler Available", rDevice.bDeviceCompilerAvailable);
+ aWriter.log(" Device Linker Available", rDevice.bDeviceLinkerAvailable);
+
+ aWriter.log(" Platform Name", rDevice.sPlatformName);
+ aWriter.log(" Platform Vendor", rDevice.sPlatformVendor);
+ aWriter.log(" Platform Version", rDevice.sPlatformVersion);
+ aWriter.log(" Platform Profile", rDevice.sPlatformProfile);
+ aWriter.log(" Platform Extensions", rDevice.sPlatformExtensions);
+ aWriter.text("");
+ }
+ nIndex++;
+ }
+}
+
+} // end anonymous namespace
+
+ds_device const & getDeviceSelection(
+ std::u16string_view sProfilePath, bool bForceSelection)
+{
+ /* Run only if device is not yet selected */
+ if (!bIsDeviceSelected || bForceSelection)
+ {
+ /* Setup */
+ std::unique_ptr<ds_profile> aProfile;
+ ds_status status;
+ status = initDSProfile(aProfile, "LibreOffice v1");
+
+ if (status != DS_SUCCESS)
+ {
+ // failed to initialize profile.
+ selectedDevice.eType = DeviceType::NativeCPU;
+ return selectedDevice;
+ }
+
+ /* Try reading scores from file */
+ OUString sFilePath = OUString::Concat(sProfilePath) + "opencl_profile.xml";
+
+ if (!bForceSelection)
+ {
+ status = readProfile(sFilePath, aProfile);
+ }
+ else
+ {
+ status = DS_INVALID_PROFILE;
+ SAL_INFO("opencl.device", "Performing forced profiling.");
+ }
+ if (DS_SUCCESS != status)
+ {
+ if (!bForceSelection)
+ {
+ SAL_INFO("opencl.device", "Profile file not available (" << sFilePath << "); performing profiling.");
+ }
+
+ /* Populate input data for micro-benchmark */
+ std::unique_ptr<LibreOfficeDeviceEvaluationIO> testData(new LibreOfficeDeviceEvaluationIO);
+ testData->inputSize = INPUTSIZE;
+ testData->outputSize = OUTPUTSIZE;
+ testData->input0.resize(testData->inputSize);
+ testData->input1.resize(testData->inputSize);
+ testData->input2.resize(testData->inputSize);
+ testData->input3.resize(testData->inputSize);
+ testData->output.resize(testData->outputSize);
+ populateInput(testData);
+
+ /* Perform evaluations */
+ status = profileDevices(aProfile, testData);
+
+ if (DS_SUCCESS == status)
+ {
+ /* Write scores to file */
+ status = writeProfile(sFilePath, aProfile);
+ if (DS_SUCCESS == status)
+ {
+ SAL_INFO("opencl.device", "Scores written to file (" << sFilePath << ").");
+ }
+ else
+ {
+ SAL_INFO("opencl.device", "Error saving scores to file (" << sFilePath << "); scores not written to file.");
+ }
+ }
+ else
+ {
+ SAL_INFO("opencl.device", "Unable to evaluate performance; scores not written to file.");
+ }
+ }
+ else
+ {
+ SAL_INFO("opencl.device", "Profile read from file (" << sFilePath << ").");
+ }
+
+ /* Pick best device */
+ int bestDeviceIdx = pickBestDevice(aProfile);
+
+ /* Override if necessary */
+ char* overrideDeviceStr = getenv("SC_OPENCL_DEVICE_OVERRIDE");
+ if (nullptr != overrideDeviceStr)
+ {
+ int overrideDeviceIdx = matchDevice(aProfile, overrideDeviceStr);
+ if (-1 != overrideDeviceIdx)
+ {
+ SAL_INFO("opencl.device", "Overriding Device Selection (SC_OPENCL_DEVICE_OVERRIDE=" << overrideDeviceStr << ").");
+ bestDeviceIdx = overrideDeviceIdx;
+ if (aProfile->devices[bestDeviceIdx].eType == DeviceType::OpenCLDevice)
+ {
+ SAL_INFO("opencl.device", "Selected Device[" << bestDeviceIdx << "]: " << aProfile->devices[bestDeviceIdx].sDeviceName << " (OpenCL).");
+ }
+ else
+ {
+ SAL_INFO("opencl.device", "Selected Device[" << bestDeviceIdx << "]: CPU (Native).");
+ }
+ }
+ else
+ {
+ SAL_INFO("opencl.device", "Ignoring invalid SC_OPENCL_DEVICE_OVERRIDE=" << overrideDeviceStr << ").");
+ }
+ }
+
+ /* Final device selection */
+ if (bestDeviceIdx >=0 && o3tl::make_unsigned( bestDeviceIdx ) < aProfile->devices.size() )
+ {
+ selectedDevice = aProfile->devices[bestDeviceIdx];
+ bIsDeviceSelected = true;
+
+ writeDevicesLog(aProfile, sProfilePath, bestDeviceIdx);
+ } else {
+ selectedDevice.eType = DeviceType::NativeCPU;
+ }
+ }
+ return selectedDevice;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */