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Bookmark or Share- Fastest way to reset every value of std::vector<int> to 0efficient way to initialize a vector with zero after constructor. 7. Parallel fill std::vector with zero. 0.
- Faster way to zero memory than with memset? - Stack Overflowzero_1 is the slowest, except for -O3. zero_sizet is the fastest with roughly equal performance across -O1, -O2 and -O3. memset was always slower than zero_sizet. (twice as slow for -O3). one thing of interest is that at -O3 zero_1 was equally fast as zero_sizet. however the disassembled function had roughly four times as many instructions (I ...
- Proper way to empty a C-String - Stack OverflowIf you are trying to clear out a receive buffer for something that receives strings I have found the best way is to use memset as described above. The reason is that no matter how big the next received string is (limited to sizeof buffer of course), it will automatically be an asciiz string if written into a buffer that has been pre-zeroed.
- Reset C int array to zero : the fastest way? - Stack Overflowint memset: 196 fill: 613 ZERO: 221 intrin_ZERO: 95 long long: memset: 273 fill: 559 ZERO: 376 intrin_ZERO: 188 There is a lot interesting going on here: llvm killing gcc, MSVC's typical spotty optimizations (it does an impressive dead code elimination on static arrays and then has awful performance for fill).
- Why do we need to call zero_grad () in PyTorch? - Stack Overflowloss.backward() # Compute gradients. optimizer.step() # Tell the optimizer the gradients, then step. optimizer.zero_grad() # Zero the gradients to start fresh next time. Why zero the gradients? Once you've completed a step, you don't really need to keep track of your previous suggestion (i.e. gradients) of where to step.
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