Better alternating between video cards

Joseph Redmon

2014-04-18 324e0a33dd7a3bf5f47c88b37de68dfca917ef2d

 src/opencl.c

@@ -2,6 +2,9 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>


cl_info cl = {0};

@@ -12,17 +15,23 @@
    }
}

#define MAX_DEVICES 10

cl_info cl_init()
{
    cl_info info;
    info.initialized = 0;
    //cl_uint num_platforms, num_devices;
    cl_uint num_platforms, num_devices;
    // Fetch the Platform and Device IDs; we only want one.
    cl_device_id devices[2];
    info.error=clGetPlatformIDs(1, &info.platform, 0);
    cl_device_id devices[MAX_DEVICES];
    info.error=clGetPlatformIDs(1, &info.platform, &num_platforms);
    check_error(info);
    info.error=clGetDeviceIDs(info.platform, CL_DEVICE_TYPE_ALL, 2, devices, 0);
    info.device = devices[rand()%2];
    info.error=clGetDeviceIDs(info.platform, CL_DEVICE_TYPE_ALL, MAX_DEVICES, devices, &num_devices);
    if(num_devices > MAX_DEVICES) num_devices = MAX_DEVICES;
    int index = getpid()%num_devices;
    printf("%d rand, %d devices, %d index\n", getpid(), num_devices, index);
    info.device = devices[index];
    fprintf(stderr, "Found %d device(s)\n", num_devices);
    check_error(info);

    cl_context_properties properties[]={