Hi Everyone,
I am sure it's something quite trivial that I am doing incorrectly but I can't
seem to be able to find it.
The following simple pycuda code is printing some random values from the kernel
for the long integer array.
Please ignore the arbitrary initialisations in places as this is just for the
test.
--code--
import numpy as np
import pycuda.driver as drv
import pycuda.autoinit
from pycuda.compiler import SourceModule
_stats_kernel_source = """
#include <stdio.h>
__global__ void stats_kernel(unsigned long *CROMEID, int numCROMECELLS)
{
// calculate pixel idx
int x = blockIdx.x * blockDim.x + threadIdx.x;
if (x < numCROMECELLS)
{
if (x < 1)
{
unsigned long cid = CROMEID[x];
printf("Value in Kernel at %d is %lu\\n",x,cid);
}
}
}
"""
zonal_stats_cuda = SourceModule(_stats_kernel_source)
zonal_stats_cuda_func = zonal_stats_cuda.get_function("stats_kernel")
numCROMECELLS = np.uint32(91480)
cromeCELLS = np.zeros((numCROMECELLS,), dtype=np.uint64)
long_cromeid = np.uint64(1091194009352)
cromeCELLS[0] = long_cromeid
long_cromeid = np.uint64(1088314008174)
cromeCELLS[1] = long_cromeid
long_cromeid = np.uint64(1091194011015)
cromeCELLS[2] = long_cromeid
print "Num Cells:%d"%(numCROMECELLS)
print "Pre-Kernel Value at 0 in long array is %d"%(cromeCELLS[0])
zonal_stats_cuda_func(drv.In(cromeCELLS), numCROMECELLS, block=(32,1,1))
---output-
Num Cells:91480
Pre-Kernel Value at 0 in long array is 1091194009352
Value in Kernel at 0 is 272316168
Sanjay Rana | Design Directorate
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