5.9. PopLibs

3.0.0

poplin:
- Add new options to measure accuracy of the planner by comparing the planner to the profiled output in the single_conv_layer tool.
- Improve common error messages to identify if the error was for a convolution or matrix multiply.
popops:
- Add support to cast between FP8 and FP32.
- Optimise gather, scatter and other operations which have padding indices.

popnn:
- Fixed incorrect arithmetic expression in popnn the calculation of nonlinearity estimated cycles.
popops
- Fixed bug in popops::multiUpdatemax which returned the wrong value.
poprand
- Fixed Poplar rand to ensure random numbers are generated within the requested range.

Rename movz to movnz. Due to an initial bug in the ISA, movnz was incorrectly named as movz. movz is now deprecated.
Poplar vertices can now return a void instead of a bool. Multiple PopLibs vertices have been updated to return void.
poplin
- Improve documentation for layerNormStatistics.
- Add better error reporting of valid types for convolution and matmul calls.
popops
- Balance work across worker threads for scatters to improve performance.
- Added an assembler implementation of the casts between FP8 and FP16 that improves performance by a factor of 36.

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