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hash-method-performance-paper

Novel Hashing Method Suitable for Lookup Functions: Paper

Executive Summary
The paper describes a novel hashing method suitable for lookup functions. Traditional methods are either of lower hash quality or inferior performance. In this paper, we show how to compute a high-quality hash digest at extremely high performance on Intel® processors using the crc32 instruction. Our method also generates multiple 32-bit hashes of an input data buffer, which have low correlation.

This paper describes a novel hashing method suitable for lookup functions, based on the crc32 instruction. We show how to compute a high-quality 64-bit hash digest at extremely high performance on Intel® processors. For large data buffers, the performance of our hash function tends to ~ 0.44 cycles/byte on a single thread of an Intel® Core™ i5 650 processor. Even for small buffers (~24 bytes), the performance is better than 1 cycle/byte.

The Intel® Embedded Design Center provides qualified developers with web-based access to technical resources. Access Intel Confidential design materials, step-by step guidance, application reference solutions, training, Intel’s tool loaner program, and connect with an e-help desk and the embedded community. Design Fast. Design Smart. Get started today. www.intel.com/embedded/edc.

Read the full Novel Hashing Method Suitable for Lookup Functions White Paper.

Novel Hashing Method Suitable for Lookup Functions: Paper

Executive Summary
The paper describes a novel hashing method suitable for lookup functions. Traditional methods are either of lower hash quality or inferior performance. In this paper, we show how to compute a high-quality hash digest at extremely high performance on Intel® processors using the crc32 instruction. Our method also generates multiple 32-bit hashes of an input data buffer, which have low correlation.

This paper describes a novel hashing method suitable for lookup functions, based on the crc32 instruction. We show how to compute a high-quality 64-bit hash digest at extremely high performance on Intel® processors. For large data buffers, the performance of our hash function tends to ~ 0.44 cycles/byte on a single thread of an Intel® Core™ i5 650 processor. Even for small buffers (~24 bytes), the performance is better than 1 cycle/byte.

The Intel® Embedded Design Center provides qualified developers with web-based access to technical resources. Access Intel Confidential design materials, step-by step guidance, application reference solutions, training, Intel’s tool loaner program, and connect with an e-help desk and the embedded community. Design Fast. Design Smart. Get started today. www.intel.com/embedded/edc.

Read the full Novel Hashing Method Suitable for Lookup Functions White Paper.

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