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Add cheddar_gpu bx/ax pair ops and tensor products - #3630
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Adds 5 operations to the cheddar_gpu dialect: add_2, sub_2, neg_2, tensor, and tensor_square. The `_2` ops are kernels that implement the operation in question on two polynomials simultaneously. As described in the Cheddar paper, this is more efficient on GPU because it allows the kernel to load the primes it needs for each limb only once to process more than one polynomial. This shows up a lot in CKKS because ciphertexts are pairs of polynomials. tensor is for cipherterxt-ciphertext multiplication (without relinearization), and tensor_square specializes when both mul operands are the same ciphertext. PiperOrigin-RevId: 1015811844
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Add cheddar_gpu bx/ax pair ops and tensor products
Adds 5 operations to the cheddar_gpu dialect:
add_2, sub_2, neg_2, tensor, and tensor_square.
The
_2ops are kernels that implement the operation in question on two polynomials simultaneously. As described in the Cheddar paper, this is more efficient on GPU because it allows the kernel to load the primes it needs for each limb only once to process more than one polynomial. This shows up a lot in CKKS because ciphertexts are pairs of polynomials. tensor is for cipherterxt-ciphertext multiplication (without relinearization), and tensor_square specializes when both mul operands are the same ciphertext.