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[XLA:GPU] doc updates #3425

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[XLA:GPU] doc updates #3425

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9 changes: 9 additions & 0 deletions tsl/platform/tensor_float_32_utils.h
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Expand Up @@ -20,6 +20,15 @@ namespace tsl {

// NOTE: The usage of this function is only supported through the Tensorflow
// framework.
// If TensorFloat-32 is enabled, float32 inputs of supported ops, such as
// `tf.linalg.matmul`, will be rounded from 23 bits of precision to 10 bits of
// precision in most cases. This allows the ops to execute much faster by
// utilizing the GPU's tensor cores. TensorFloat-32 has the same dynamic range
// as float32, meaning it is no more likely to underflow or overflow than
// float32. Ops still use float32 accumulation when TensorFloat-32 is enabled.
// Enabling or disabling TensorFloat-32 only affects Ampere GPUs and above.
// See enable_tensor_float_32_execution in python/framework/config.py for more
// details.
void enable_tensor_float_32_execution(bool enabled);

bool tensor_float_32_execution_enabled();
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