Failed to run DawnCC OpenACC annotated code compiled with PGI C compiler

[babouFomb]

Hi,

I downloaded DawnCC benchmarks zip file and compiled auto_acc directory files with PGI compiler (release 16.10-0) on Ubuntu 14.04.

This is the pgcc output during the compilation of 2DConvolution.c file.

rokiatou@rokiatou:~/Documents/Thèse/dawncc_doc/benchmarks/polybench/auto_acc/2DCONV$ pgcc 2DConvolution.c -g -mp -Minform=warn -fast -O3 -acc -Minfo -time -ta=nvidia,cuda7.5,cc35,fastmath,fma,keepgpu,keepptx,lineinfo,unroll,loadcache:L1 -o test
conv2D:
46, Loop not vectorized: data dependency
Loop unrolled 2 times
GPU__conv2D:
67, Generating copyin(A[:67108864])
Generating copyout(B[8193:67092478])
68, Generating implicit copyin(A[:67108864])
Generating implicit copyout(B[8193:67092478])
70, Loop is parallelizable
Loop not fused: no successor loop
72, Complex loop carried dependence of A->,B-> prevents parallelization
Inner sequential loop scheduled on accelerator
Accelerator kernel generated
Generating Tesla code
70, #pragma acc loop gang, vector(128) /* blockIdx.x threadIdx.x */
72, #pragma acc loop seq
72, Complex loop carried dependence of B-> prevents parallelization
Loop not vectorized: data dependency
Loop unrolled 2 times
init:
87, Loop not vectorized/parallelized: contains call
compareResults:
102, Loop not vectorized/parallelized: contains call
Timing stats:
init 66 millisecs 44%
parser 17 millisecs 11%
vectorize 50 millisecs 33%
schedule 17 millisecs 11%
Total time 150 millisecs

But when I tried to run my object file test, I got the following error message:

Two dimensional (2D) convolution <<
Failing in Thread:1
call to cuModuleLoadData returned error 209: No binary for GPU

I got the same message for all others. I don't understand why this happen while when I annotate manually my code and compile it with pgcc, I don't get any runtime error.

Thank.

[gleisonsdm]

Hi,

Can you show me the flags are you using in DawnCC?

Regards,

Gleison

[babouFomb]

I used the following flags in DawnCC: ../DawnCC/run.sh -d /home/rokiatou/Documents/Thèse/dawncc_doc -pl true -ps 0 -mc true -k -src bicg.cpp

And on DawnCC interface I checked: Pass statistics, Coalesce memory copies and OpenACC.

[brenocfg]

Did you compile your manually annotated file with the same parameters as you used for the DawnCC-annotated one?

Because this seems to be more related to the code generation phase than the pragmas themselves, so it's more likely to be occurring due to how pgcc is generating the binary. Usually these "No binary for GPU" errors occur when trying to run a binary generated for GPUs with higher Compute Capability than the one installed, or when there's errors in the CUDA ptx files compiled (which would imply pgcc generated invalid code, so it's less likely to be the case here).