Hi everyone,
i am trying to use array of structure in my project in cuda and to increase the performance i would like to use the trove-library.
Unfortunately i could not find much example on how the library can be use.
could you please provide some example on how to use it.
It would be very helpfull.

many thanks

Best regards

Fab

Hi,

I am working at warp level to use shfl intrinsics but I sometimes end up using less than 32 threads per warp. Since the bottleneck of my GPU Kernels is always the bandwidth, I was wondering if it is possible to use Trove to load the 2D data with 32 threads but distribute it to a smaller number of threads.

Thank you in advance for your help,
Sincerely,
Yohann

The following code crashes nvcc5. Compile with
nvcc main.cu -Itrove-master -arch=compute_35

include <trove/ptr.h>

struct WU32
{
unsigned int data[32];
};

global void kernel(WU32* in, WU32* out)
{
int tid = blockIdx.x*blockDim.x + threadIdx.x;
trove::coalesced_ptr p(in);
WU32 r = p[tid];
trove::store_warp_contiguous(r, out+tid);
}

int main(int argc, char** argv)
{
return 0;
}

Hi Bryan,

I just realized that trove breaks with C++11 compilation, even the simple tests are failing to compile:

e.g., modify the Makefiles, appending -std=c++11

../trove/utility.h(82): error: type name is not allowed

../trove/utility.h(82): error: the global scope has no "value"

Trove is a great utility and greatly simplifies CUDA programming for a bunch of codes. Any chance you can get this fixed for C++11?

First, thanks so much for making this library! It's been a huge performance win for a lot of my kernels. Recently, I'm seeing a handful of warnings (from the CUDA 9 changes to __ballot(), __shfl(), etc.) when compiling projects with Trove. Is it feasible to update these calls appropriately, or would that break compatibility with older versions of nvcc?

nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2017 NVIDIA Corporation
Built on Fri_Sep__1_21:08:03_CDT_2017
Cuda compilation tools, release 9.0, V9.0.176

can you provide some detailed samples for actual use? Thanks.