How bcast works
#6190
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I saw a testcase in test-backend-ops to test bcast with ADD, MUL and DIV. As far as I know, bcast only works for different dims, and all dims should be same or 1. But this case cast is adding tensor a(16,10,10,10) with b(32,10,10,10). I read the source code, but can't undersand clearly, could some one tell me how it works? Does it bcast tensor a(16,10,10,10) to (32,10,10,10), and copy first "0-16" to "17-31"? |
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Answered by
slaren
Mar 21, 2024
Replies: 1 comment
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It repeats the second tensor to match the dimension of the first. Eg. |
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Answer selected by
hipudding
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It repeats the second tensor to match the dimension of the first. Eg.
ggml_add(a, b)is equivalent toggml_add(a, ggml_repeat(b, a)).