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Support bit-exact INT8 matrix multiplication via INT4 building blocks in QWIX - #371

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test_981365884
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test_981365884

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Support bit-exact INT8 matrix multiplication via INT4 building blocks in QWIX

  • Support Karatsuba signed INT8 GEMM (3 native INT4 passes) matching exact INT8 product.
  • Support Naive signed INT8 GEMM (4 native INT4 passes) matching exact INT8 product.
  • Support microscaled mxint8 block emulation via INT4 building blocks with block-scale products.
  • Add unit tests verifying 100% bit-exact equivalence (0 max diff) to signed INT8 GEMM across random and edge-case inputs.

@copybara-service
copybara-service Bot force-pushed the test_981365884 branch 2 times, most recently from 0463ac7 to 8c08bbb Compare September 15, 2026 00:20
… in QWIX

- Support Karatsuba signed INT8 GEMM (3 native INT4 passes) matching exact INT8 product.
- Support Naive signed INT8 GEMM (4 native INT4 passes) matching exact INT8 product.
- Support microscaled mxint8 block emulation via INT4 building blocks with block-scale products.
- Add unit tests verifying 100% bit-exact equivalence (0 max diff) to signed INT8 GEMM across random and edge-case inputs.

PiperOrigin-RevId: 981365884
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