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POCUDA error message : unspecified launch failure
 

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  1. POCUDA error message : unspecified launch failure
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    <p>This is part of my CUDA code. But last part of this code says some error message.</p> <pre><code>unsigned int *mat_count; off_t *mat_position; unsigned int *matches_count; off_t *matches_position; ...... cudaMalloc ( (void **) &amp;mat_count, sizeof(unsigned int)*10); cudaMalloc ( (void **) &amp;mat_position, sizeof(off_t)*10); ...... matches_count = (unsigned int *)malloc(sizeof(unsigned int)*10); matches_position = (off_t *)malloc(sizeof(off_t)*10); for ( i = 0 ; i &lt; 10 ; i++ ) { matches_count [i] = 0; matches_position[i] = 0; } ...... cudaMemcpy (mat_count, matches_count , sizeof(unsigned int)*10, cudaMemcpyHostToDevice ); cudaMemcpy (mat_position, matches_position, sizeof(off_t)*10, cudaMemcpyHostToDevice ); ...... match&lt;&lt;&lt;BLK_SIZE,THR_SIZE&gt;&gt;&gt;( reference_total, indextable_total, sequences, start_sequence, sequence_length, end_sequence, ref_base, idx_base, msk_base, mat_count, mat_position, reference, first_indexes, seqmaskc ); err=cudaGetLastError(); if(err!=cudaSuccess) { printf("\n1 %s\n", cudaGetErrorString(err)); } err= cudaMemcpy (matches_count , mat_count, sizeof(unsigned int)*10, cudaMemcpyDeviceToHost ); if(err!=cudaSuccess) { printf("\n2 %s\n", cudaGetErrorString(err)); } err= cudaMemcpy (matches_position, mat_position, sizeof(off_t)*10, cudaMemcpyDeviceToHost ); if(err!=cudaSuccess) { printf("\n3 %s\n", cudaGetErrorString(err)); } </code></pre> <p>The following part of code had reported "unspecified launch failure" this error message. I don't know why this error message is reported.</p> <pre><code>err=cudaMemcpy (matches_position, mat_position, sizeof(off_t)*10, cudaMemcpyDeviceToHost ); if(err!=cudaSuccess) { printf("\n3 %s\n", cudaGetErrorString(err)); } </code></pre> <p>The followings are part of match function.</p> <pre><code>__global__ void match(...) { ...... reference_blk = (THR_SIZE * blockIdx.x + threadIdx.x) * 32 + reference; ...... //-- added for parallize --// for (p = start_p ; p != last_p ; p++) { for ( s = start_sequence, sequence = sequences ; s != end_sequence ; s++, sequence += sequence_bytes ) { ref_off = *(((unsigned int*)(idx_base)) + p); shifted_in = 0; if((int)(first_indexes[s-start_sequence] % 8 - ref_off % 8) &lt; 0){ int shamt2 = (ref_off % 8 - first_indexes[s-start_sequence] % 8); mask_buffer = *((unsigned long *)(msk_base + (ref_off - first_indexes[s-start_sequence])/8)) &gt;&gt; shamt2; if( ( (*(unsigned long *)(seqmaskc + 16 * (s-start_sequence))) ^ mask_buffer ) &lt;&lt; shamt2) continue; } else if((int)(first_indexes[s-start_sequence] % 8 - ref_off % 8) == 0){ mask_buffer = *((unsigned long *)(msk_base + (ref_off)/8)); if( (*(unsigned long *)(seqmaskc + 16 * (s-start_sequence)) ^ mask_buffer)) continue; } else{ int shamt2 = 8 - (first_indexes[s-start_sequence] % 8 - ref_off % 8); mask_buffer = *((unsigned long *)(msk_base + (ref_off/8- first_indexes[s-start_sequence]/8) - 1)) &gt;&gt; shamt2; if( ( (*(unsigned long *)(seqmaskc + 16 * (s-start_sequence))) ^ mask_buffer ) &lt;&lt; shamt2) continue; } //full compare if((int)(first_indexes[s-start_sequence] % 4 - ref_off % 4) &lt; 0){ int shamt = (ref_off % 4 - first_indexes[s-start_sequence] % 4) * 2; memcpy(reference_blk, ref_base + ref_off / 4 - first_indexes[s-start_sequence] / 4, sequence_bytes); ...... //-- instead of memcmp --// int v = 0; char *p1 = (char *)sequence; char *p2 = (char *)reference_blk; int tmp_asd = sequence_bytes; while(tmp_asd!=0){ v = *(p1++) - *(p2++); if(v!=0) break; tmp_asd--; } if(v == 0){ mat_count[s - (int)start_sequence]++; /* Maintain count */ mat_position[s - (int)start_sequence] = ref_off-first_indexes[s-start_sequence]; /* Record latest position */ } } else if((int)(first_indexes[s-start_sequence] % 4 - ref_off % 4 )== 0){ memcpy(reference_blk, ref_base + ref_off / 4 - first_indexes[s-start_sequence] / 4, sequence_bytes); ....... //-- instead of memcmp --// int v = 0; char *p1 = (char *)sequence; char *p2 = (char *)reference_blk; int tmp_asd = sequence_bytes; while(tmp_asd!=0){ v = *(p1++) - *(p2++); if(v!=0) break; tmp_asd--; } if(v == 0){ mat_count[s - (int)start_sequence]++; /* Maintain count */ mat_position[s - (int)start_sequence] = ref_off-first_indexes[s-start_sequence]; /* Record latest position */ } } else { int shamt = 8 - (first_indexes[s-start_sequence] % 4 - ref_off % 4) * 2; memcpy(reference_blk, ref_base + ref_off / 4 - first_indexes[s-start_sequence] / 4 - 1, 32); ...... //-- instead of memcmp --// int v = 0; char *p1 = (char *)sequence; char *p2 = (char *)reference_blk; int tmp_asd = sequence_bytes; while(tmp_asd!=0){ v = *(p1++) - *(p2++); if(v!=0) break; tmp_asd--; } if (v == 0){ mat_count[s - (int)start_sequence]++; /* Maintain count */ mat_position[s - (int)start_sequence] = ref_off-first_indexes[s-start_sequence];/* Record latest position */ } } } } </code></pre> <p>}</p>
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      1. POCUDA error message : unspecified launch failure
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    1. COWhat are the values of `BLK_SIZE` and `THR_SIZE` ?
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    2. COBLK_SIZE and THR_SIZE are one.
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    3. COYou probably need to post the code for the kernel function `match`
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      1. USPaul R
 

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