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Fix autoencoder CUDA kernel: initialise example-buffer padding bits #86

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Fix autoencoder CUDA kernel: initialise example-buffer padding bits #86

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11 changes: 5 additions & 6 deletions tmu/clause_bank/cuda/tools.cu
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Original file line number Diff line number Diff line change
Expand Up @@ -82,12 +82,11 @@ extern "C"

unsigned int number_of_literal_chunks = (number_of_literals-1)/32 + 1;

// Initialize example vector X

for (int k = 0; k < number_of_features; ++k) {
int chunk_nr = k / 32;
int chunk_pos = k % 32;
X[chunk_nr] &= ~(1U << chunk_pos);
// Initialize example vector X to the empty-example state, matching the CPU path (Tools.c):
// zero the whole buffer with number_of_literal_chunks (so the final-chunk padding bits
// are 0), then set the negated-literal bits below.
for (unsigned int c = 0; c < number_of_literal_chunks; ++c) {
X[c] = 0;
}

for (int k = number_of_features; k < number_of_literals; ++k) {
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