FM / compute

/usr/include/boost/compute

Name	Size	Mode	Actions
algorithm/	-	0755	rm
allocator/	-	0755	rm
async/	-	0755	rm
container/	-	0755	rm
detail/	-	0755	rm
exception/	-	0755	rm
experimental/	-	0755	rm
functional/	-	0755	rm
image/	-	0755	rm
interop/	-	0755	rm
iterator/	-	0755	rm
lambda/	-	0755	rm
memory/	-	0755	rm
random/	-	0755	rm
types/	-	0755	rm
type_traits/	-	0755	rm
utility/	-	0755	rm
algorithm.hpp	4399	0644	edit dl rm
allocator.hpp	748	0644	edit dl rm
async.hpp	703	0644	edit dl rm
buffer.hpp	6783	0644	edit dl rm
cl.hpp	1625	0644	edit dl rm
closure.hpp	10111	0644	edit dl rm
cl_ext.hpp	664	0644	edit dl rm
command_queue.hpp	62500	0644	edit dl rm
config.hpp	2359	0644	edit dl rm
container.hpp	1021	0644	edit dl rm
context.hpp	6594	0644	edit dl rm
core.hpp	1141	0644	edit dl rm
device.hpp	21203	0644	edit dl rm
event.hpp	10280	0644	edit dl rm
exception.hpp	858	0644	edit dl rm
function.hpp	12138	0644	edit dl rm
functional.hpp	1343	0644	edit dl rm
image.hpp	894	0644	edit dl rm
image2d.hpp	549	0644	edit dl rm
image3d.hpp	549	0644	edit dl rm
image_format.hpp	559	0644	edit dl rm
image_sampler.hpp	561	0644	edit dl rm
iterator.hpp	1140	0644	edit dl rm
kernel.hpp	17580	0644	edit dl rm
lambda.hpp	862	0644	edit dl rm
memory.hpp	717	0644	edit dl rm
memory_object.hpp	6994	0644	edit dl rm
pipe.hpp	4008	0644	edit dl rm
platform.hpp	7420	0644	edit dl rm
program.hpp	25342	0644	edit dl rm
random.hpp	1148	0644	edit dl rm
source.hpp	551	0644	edit dl rm
svm.hpp	1969	0644	edit dl rm
system.hpp	9388	0644	edit dl rm
types.hpp	870	0644	edit dl rm
type_traits.hpp	1106	0644	edit dl rm
user_event.hpp	2414	0644	edit dl rm
utility.hpp	823	0644	edit dl rm
version.hpp	665	0644	edit dl rm
wait_list.hpp	557	0644	edit dl rm

Edit: /usr/include/boost/compute/system.hpp (9388B)

//---------------------------------------------------------------------------//
// Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
//
// Distributed under the Boost Software License, Version 1.0
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
//
// See http://boostorg.github.com/compute for more information.
//---------------------------------------------------------------------------//

#ifndef BOOST_COMPUTE_SYSTEM_HPP
#define BOOST_COMPUTE_SYSTEM_HPP

#include <string>
#include <vector>
#include <cstdlib>

#include <boost/throw_exception.hpp>

#include <boost/compute/cl.hpp>
#include <boost/compute/device.hpp>
#include <boost/compute/context.hpp>
#include <boost/compute/platform.hpp>
#include <boost/compute/command_queue.hpp>
#include <boost/compute/detail/getenv.hpp>
#include <boost/compute/exception/no_device_found.hpp>

namespace boost {
namespace compute {

/// \class system
/// \brief Provides access to platforms and devices on the system.
///
/// The system class contains a set of static functions which provide access to
/// the OpenCL platforms and compute devices on the host system.
///
/// The default_device() convenience method automatically selects and returns
/// the "best" compute device for the system following a set of heuristics and
/// environment variables. This simplifies setup of the OpenCL enviornment.
///
/// \see platform, device, context
class system
{
public:
    /// Returns the default compute device for the system.
    ///
    /// The default device is selected based on a set of heuristics and can be
    /// influenced using one of the following environment variables:
    ///
    /// \li \c BOOST_COMPUTE_DEFAULT_DEVICE -
    ///        name of the compute device (e.g. "GTX TITAN")
    /// \li \c BOOST_COMPUTE_DEFAULT_DEVICE_TYPE
    ///        type of the compute device (e.g. "GPU" or "CPU")
    /// \li \c BOOST_COMPUTE_DEFAULT_PLATFORM -
    ///        name of the platform (e.g. "NVIDIA CUDA")
    /// \li \c BOOST_COMPUTE_DEFAULT_VENDOR -
    ///        name of the device vendor (e.g. "NVIDIA")
    /// \li \c BOOST_COMPUTE_DEFAULT_ENFORCE -
    ///        If this is set to "1", then throw a no_device_found() exception
    ///        if any of the above environment variables is set, but a matching
    ///        device was not found.
    ///
    /// The default device is determined once on the first time this function
    /// is called. Calling this function multiple times will always result in
    /// the same device being returned.
    ///
    /// If no OpenCL device is found on the system, a no_device_found exception
    /// is thrown.
    ///
    /// For example, to print the name of the default compute device on the
    /// system:
    /// \code
    /// // get the default compute device
    /// boost::compute::device device = boost::compute::system::default_device();
    ///
    /// // print the name of the device
    /// std::cout << "default device: " << device.name() << std::endl;
    /// \endcode
    static device default_device()
    {
        static device default_device = find_default_device();

return default_device;
    }

/// Returns the device with \p name.
    ///
    /// \throws no_device_found if no device with \p name is found.
    static device find_device(const std::string &name)
    {
        const std::vector<device> devices = system::devices();
        for(size_t i = 0; i < devices.size(); i++){
            const device& device = devices[i];

if(device.name() == name){
                return device;
            }
        }

BOOST_THROW_EXCEPTION(no_device_found());
    }

/// Returns a vector containing all of the compute devices on
    /// the system.
    ///
    /// For example, to print out the name of each OpenCL-capable device
    /// available on the system:
    /// \code
    /// for(const auto &device : boost::compute::system::devices()){
    ///     std::cout << device.name() << std::endl;
    /// }
    /// \endcode
    static std::vector<device> devices()
    {
        std::vector<device> devices;

const std::vector<platform> platforms = system::platforms();
        for(size_t i = 0; i < platforms.size(); i++){
            const std::vector<device> platform_devices = platforms[i].devices();

devices.insert(
                devices.end(), platform_devices.begin(), platform_devices.end()
            );
        }

return devices;
    }

/// Returns the number of compute devices on the system.
    static size_t device_count()
    {
        size_t count = 0;

const std::vector<platform> platforms = system::platforms();
        for(size_t i = 0; i < platforms.size(); i++){
            count += platforms[i].device_count();
        }

return count;
    }

/// Returns the default context for the system.
    ///
    /// The default context is created for the default device on the system
    /// (as returned by default_device()).
    ///
    /// The default context is created once on the first time this function is
    /// called. Calling this function multiple times will always result in the
    /// same context object being returned.
    static context default_context()
    {
        static context default_context(default_device());

return default_context;
    }

/// Returns the default command queue for the system.
    static command_queue& default_queue()
    {
        static command_queue queue(default_context(), default_device());

return queue;
    }

/// Blocks until all outstanding computations on the default
    /// command queue are complete.
    ///
    /// This is equivalent to:
    /// \code
    /// system::default_queue().finish();
    /// \endcode
    static void finish()
    {
        default_queue().finish();
    }

/// Returns a vector containing each of the OpenCL platforms on the system.
    ///
    /// For example, to print out the name of each OpenCL platform present on
    /// the system:
    /// \code
    /// for(const auto &platform : boost::compute::system::platforms()){
    ///     std::cout << platform.name() << std::endl;
    /// }
    /// \endcode
    static std::vector<platform> platforms()
    {
        cl_uint count = 0;
        clGetPlatformIDs(0, 0, &count);

std::vector<platform> platforms;
        if(count > 0)
        {
            std::vector<cl_platform_id> platform_ids(count);
            clGetPlatformIDs(count, &platform_ids[0], 0);

for(size_t i = 0; i < platform_ids.size(); i++){
                platforms.push_back(platform(platform_ids[i]));
            }
        }
        return platforms;
    }

/// Returns the number of compute platforms on the system.
    static size_t platform_count()
    {
        cl_uint count = 0;
        clGetPlatformIDs(0, 0, &count);
        return static_cast<size_t>(count);
    }

private:
    /// \internal_
    static device find_default_device()
    {
        // get a list of all devices on the system
        const std::vector<device> devices_ = devices();
        if(devices_.empty()){
            BOOST_THROW_EXCEPTION(no_device_found());
        }

// check for device from environment variable
        const char *name     = detail::getenv("BOOST_COMPUTE_DEFAULT_DEVICE");
        const char *type     = detail::getenv("BOOST_COMPUTE_DEFAULT_DEVICE_TYPE");
        const char *platform = detail::getenv("BOOST_COMPUTE_DEFAULT_PLATFORM");
        const char *vendor   = detail::getenv("BOOST_COMPUTE_DEFAULT_VENDOR");
        const char *enforce  = detail::getenv("BOOST_COMPUTE_DEFAULT_ENFORCE");

if(name || type || platform || vendor){
            for(size_t i = 0; i < devices_.size(); i++){
                const device& device = devices_[i];
                if (name && !matches(device.name(), name))
                    continue;

if (type && matches(std::string("GPU"), type))
                    if (!(device.type() & device::gpu))
                        continue;

if (type && matches(std::string("CPU"), type))
                    if (!(device.type() & device::cpu))
                        continue;

if (platform && !matches(device.platform().name(), platform))
                    continue;

if (vendor && !matches(device.vendor(), vendor))
                    continue;

return device;
            }

if(enforce && enforce[0] == '1')
                BOOST_THROW_EXCEPTION(no_device_found());
        }

// find the first gpu device
        for(size_t i = 0; i < devices_.size(); i++){
            const device& device = devices_[i];

if(device.type() & device::gpu){
                return device;
            }
        }

// find the first cpu device
        for(size_t i = 0; i < devices_.size(); i++){
            const device& device = devices_[i];

if(device.type() & device::cpu){
                return device;
            }
        }

// return the first device found
        return devices_[0];
    }

/// \internal_
    static bool matches(const std::string &str, const std::string &pattern)
    {
        return str.find(pattern) != std::string::npos;
    }
};

} // end compute namespace
} // end boost namespace

#endif // BOOST_COMPUTE_SYSTEM_HPP

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