/usr/include/linbox/algorithms/opencl-resource-controller.h is in liblinbox-dev 1.4.2-5build1.
This file is owned by root:root, with mode 0o644.
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* Copyright (C) 2012 Matthew Wezowicz
*
* Written by Matthew Wezowicz <mwezz@udel.edu>
*
* ========LICENCE========
* This file is part of the library LinBox.
*
* LinBox is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
* ========LICENCE========
*.
*/
/** @file algorithms/opencl-resource-controller.h
*/
#include <pthread.h>
#include <algorithm>
#include <istream>
#include <iterator>
#include <map>
#include <sstream>
#include <string>
#include <vector>
#include <CL/cl.h>
//#include "named-mutex.h"
#include "opencl-environ.h"
#ifndef __LINBOX_opencl_resource_controller_H
#define __LINBOX_opencl_resource_controller_H
namespace LinBox{
/**
* Enumerate all of the platforms currently available on the system
*/
std::vector<cl_platform_id> enumPlatforms(){
//Variables
cl_int errcode;
cl_platform_id* platforms;
cl_uint numPlatforms;
//Get number of platforms on system
errcode = clGetPlatformIDs(0, NULL, &numPlatforms);
linbox_check(errcode == CL_SUCCESS);
//Return empty vector if error
if(errcode != CL_SUCCESS || numPlatforms <= 0){
std::vector<cl_platform_id> ret;
return ret;
}
//Allocate memory for platforms IDs
platforms = new cl_platform_id[numPlatforms];
//Read in platform IDs
errcode = clGetPlatformIDs(numPlatforms, platforms, NULL);
linbox_check(errcode == CL_SUCCESS);
//Allocate vector for platform IDs
std::vector<cl_platform_id> ret;
//Copy platform IDs into vector
for(int i = 0; i < (int)numPlatforms; i++){
ret.push_back(platforms[(size_t)i]);
}
//Deallocate memory
delete[] platforms;
return ret;
}
/**
* Get the platform name associated with the platform
*/
std::string getPlatformName(cl_platform_id platform){
//Variables
char* tempBuffer;
cl_int errcode;
size_t sizeRet;
//Get size of platform name
errcode = clGetPlatformInfo(platform, CL_PLATFORM_NAME, 0, NULL, &sizeRet);
linbox_check(errcode == CL_SUCCESS);
//Allocate memory for platform name
tempBuffer = new char[sizeRet];
//Read in platform name
errcode = clGetPlatformInfo(
platform,
CL_PLATFORM_NAME,
sizeRet,
tempBuffer,
NULL);
linbox_check(errcode == CL_SUCCESS);
//Convert platform name to std::string
std::string ret(tempBuffer);
//Deallocate memory
delete[] tempBuffer;
return ret;
}
/**
* Get the platform version associated with the platform
*/
double getPlatformVersion(cl_platform_id platform){
//Variables
char* tempBuffer;
cl_int errcode;
double ret = 0;
size_t first;
size_t second;
size_t sizeRet;
//Get size of platform version string
errcode = clGetPlatformInfo(
platform,
CL_PLATFORM_VERSION,
0,
NULL,
&sizeRet);
linbox_check(errcode == CL_SUCCESS);
//Allocate memory for platform version string
tempBuffer = new char[sizeRet];
//Read in platform name string
errcode = clGetPlatformInfo(
platform,
CL_PLATFORM_VERSION,
sizeRet,
tempBuffer,
NULL);
linbox_check(errcode == CL_SUCCESS);
//Convert platform version string to std::string
std::string versionString(tempBuffer);
//Isolate the version number in string and convert to double
first = versionString.find_first_of(" ", 0);
second = versionString.find_first_of(" ", (first + 1));
std::string tempString = versionString.substr(first, (second - first));
std::stringstream strstream(tempString);
strstream >> ret;
//Deallocate memory
delete[] tempBuffer;
return ret;
}
/**
* Get the platform extensions associated with the platform
*/
std::vector<std::string> getPlatformExtensions(cl_platform_id platform){
//Variables
char* tempBuffer;
cl_int errcode;
size_t sizeRet;
//Get size of platform extensions string
errcode = clGetPlatformInfo(
platform,
CL_PLATFORM_EXTENSIONS,
0,
NULL,
&sizeRet);
linbox_check(errcode == CL_SUCCESS);
//Allocate memory for platform extensions string
tempBuffer = new char[sizeRet];
//Read in platform extensions string
errcode = clGetPlatformInfo(
platform,
CL_PLATFORM_EXTENSIONS,
sizeRet,
tempBuffer,
NULL);
linbox_check(errcode == CL_SUCCESS);
//Convert platfrom extensions string to std::string
std::string tempString(tempBuffer);
//Parse out the individual extensions and copy into vector
std::stringstream strstream(tempString);
std::istream_iterator<std::string> it(strstream);
std::istream_iterator<std::string> end;
std::vector<std::string> ret;
for(; it != end; it++){
ret.push_back(*it);
}
//Deallocate memory
delete[] tempBuffer;
return ret;
}
/**
* Enumerate all of the devices currently available on the platform
*/
std::vector<cl_device_id> enumDevices(cl_platform_id platform){
//Variables
cl_device_id* devices;
cl_int errcode;
cl_uint numDevices;
//Get number of devices in platform
errcode = clGetDeviceIDs(
platform,
CL_DEVICE_TYPE_ALL,
0,
NULL,
&numDevices);
linbox_check(errcode == CL_SUCCESS);
//Return empty vector if error
if(errcode != CL_SUCCESS || numDevices <= 0){
std::vector<cl_device_id> ret;
return ret;
}
//Allocate memory for device IDs
devices = new cl_device_id[numDevices];
//Read in device IDs
errcode = clGetDeviceIDs(
platform,
CL_DEVICE_TYPE_ALL,
numDevices,
devices,
NULL);
linbox_check(errcode == CL_SUCCESS);
//Allocate vector for device IDs
std::vector<cl_device_id> ret;
//Copy device IDs into vector
for(int i = 0; i < (int)numDevices; i++){
ret.push_back(devices[(size_t)i]);
}
//Deallocate memory
delete[] devices;
return ret;
}
/**
* Create an OpenCL context from a platfrom and device
*/
cl_context createContext(cl_platform_id platform, cl_device_id device){
//Variables
cl_context ret;
cl_int errcode;
cl_context_properties props[3] = {
CL_CONTEXT_PLATFORM,
(cl_context_properties)platform,
0};
//Create context
ret = clCreateContext(props, 1, &device, NULL, NULL, &errcode);
linbox_check(errcode == CL_SUCCESS);
return ret;
}
class OpenCLResourceController{
private:
static std::vector<OpenCLEnviron*>* environs;
#ifndef __MPI_SHARED
static std::map<unsigned int, unsigned int>* IDsToInstances;
static pthread_mutex_t controllerLock;
#else
static std::map<unsigned int, std::string>* IDsToNames;
static std::map<std::string, unsigned int>* namesToInstances;
static std::vector<NamedMutex*>* mutexs;
static NamedMutex controllerLock;
#endif
static bool initialized;
void init(){
unsigned int ID = 0;
environs = new std::vector<OpenCLEnviron*>;
#ifndef __MPI_SHARED
IDsToInstances = new std::map<unsigned int, unsigned int>;
#else
mutexs = new std::vector<NamedMUtex*>;
IDsToNames = new std::map<unsigned int, std::string>;
namesToInstances = new std::map<std::string, unsigned int>;
#endif
std::vector<cl_platform_id> platforms = enumPlatforms();
for(int i = 0; i < (int)platforms.size(); i++){
std::string platformName = getPlatformName(platforms[(size_t)i]);
double platformVersion = getPlatformVersion(platforms[(size_t)i]);
std::vector<std::string> platformExtensions =
getPlatformExtensions(platforms[(size_t)i]);
std::vector<cl_device_id> devices = enumDevices(platforms[(size_t)i]);
for(int j = 0; j < (int)devices.size(); j++){
cl_context context = createContext(platforms[(size_t)i], devices[(size_t)j]);
#ifndef __MPI_SHARED
//Allocate and initialize device lock
pthread_mutex_t* tempMutex = new pthread_mutex_t;
pthread_mutex_init(tempMutex, NULL);
//Build OpenCLEnviron
OpenCLEnviron* tempEnviron = new OpenCLEnviron(
platformName,
platformVersion,
platformExtensions,
context,
devices[(size_t)j],
tempMutex,
ID);
//Update map of ID numbers to allocated instances
(*IDsToInstances)[ID] = 0;
ID++;
#else
//Build NamedMutex name
std::stringstream strstream;
strstream << platformName << "_" << j;
std::string mutexName(strstream.str());
//Construct named mutex
NamedMutex* tempMutex = new NamedMutex(mutexName);
mutexs->push_back(tempMutex);
//Build OpenCLEnviron with local ID number
OpenCLEnviron* tempEnviron = new OpenCLEnviron(
platformName,
platformVersion,
platformExtensions,
context,
devices[(size_t)j],
tempMutex,
ID);
//Update local copy of map with
//NamedMutex names to allocated instances
unsigned int allocated =
controllerLock.updateLocalValue<unsigned int>(mutexName);
(*namesToInstances)[mutexName] = allocated;
//Update local map of ID numbers to NamedMutex names
(*IDsToNames)[ID] = mutexName;
//Update global copy of map with
//NamedMutex names to allocated instances
controllerLock.updateGlobalValue<unsigned int>(mutexName, allocated);
ID++;
#endif
environs->push_back(tempEnviron);
}
}
initialized = true;
}
public:
OpenCLResourceController(){
#ifndef __MPI_SHARED
pthread_mutex_lock(&controllerLock);
init();
//removeDuplicates();
pthread_mutex_unlock(&controllerLock);
#else
controllerLock.lock();
init();
//removeDuplicates();
controllerLock.unlock();
#endif
}
~OpenCLResourceController(){
#ifndef __MPI_SHARED
for(int i = 0; i < (int)environs->size(); i++){
pthread_mutex_destroy(environs->at((size_t)i)->getDeviceLock());
delete environs->at((size_t)i)->getDeviceLock();
delete environs->at((size_t)i);
}
#else
for(int i = 0; i < mutexs->size(); i++){
delete mutexs->at((size_t)i);
}
for(int i = 0; i < environs->size(); i++){
delete environs->at((size_t)i);
}
#endif
}
const std::vector<OpenCLEnviron*>* accessEnvirons(){
return environs;
}
void acquireController(){
#ifndef __MPI_SHARED
pthread_mutex_lock(&controllerLock);
#else
controllerLock.lock();
//Update local copy of map with
//NamedMutex names to allocated instances
///!TODO
#endif
}
void releaseController(){
#ifndef __MPI_SHARED
pthread_mutex_unlock(&controllerLock);
#else
//Update global copy of map with
//NamedMutex names to allocated instances
///!TODO
controllerLock.unlock();
#endif
}
unsigned int getInstanceCount(unsigned int ID){
#ifndef __MPI_SHARED
return (*IDsToInstances)[ID];
#else
return (*namesToInstances)[(*IDsToNames)[ID]];
#endif
}
unsigned int allocateInstance(unsigned int ID){
#ifndef __MPI_SHARED
(*IDsToInstances)[ID] += 1;
return (*IDsToInstances)[ID];
#else
(*namesToInstances)[(*IDsToNames)[ID]] += 1;
return (*namesToInstances)[(*IDsToNames)[ID]];
#endif
}
unsigned int deallocateInstance(unsigned int ID){
#ifndef __MPI_SHARED
(*IDsToInstances)[ID] -= 1;
#if 0
if((*IDsToInstances)[ID] < 0){ //! @bug BB Toujours faux
(*IDsToInstances)[ID] = 0;
}
#endif
return (*IDsToInstances)[ID];
#else
(*namesToInstances)[(*IDsToNames)[ID]] -= 1;
if((*namesToInstances)[(*IDsToNames)[ID]] < 0){
(*namesToInstances)[(*IDsToNames)[ID]] = 0;
}
return (*namesToInstances)[(*IDsToNames)[ID]];
#endif
}
}; /* end of class OpenCLResourceController */
std::vector<OpenCLEnviron*>* OpenCLResourceController::environs = NULL;
#ifndef __MPI_SHARED
std::map<unsigned int, unsigned int>*
OpenCLResourceController::IDsToInstances = NULL;
pthread_mutex_t OpenCLResourceController::controllerLock =
PTHREAD_MUTEX_INITIALIZER;
#else
std::map<unsigned int, std::string>*
OpenCLResourceController::IDsToNames = NULL;
std::map<std::string, unsigned int>*
OpenCLResourceController::namesToInstances = NULL;
std::vector<NamedMutex*>*
OpenCLResourceController::mutexs = NULL;
NamedMutex OpenCLResourceController::controllerLock =
NamedMutex("OpenCLResourceContollerLock");
#endif
bool OpenCLResourceController::initialized(false);
OpenCLResourceController& accessOpenCLResourceController(){
static OpenCLResourceController controller;
return controller;
}
} /* end of namespace LinBox */
#endif // __LINBOX_opencl_resource_controller_H
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