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Bandwidth is primarily a memory bandwidth benchmark, but it can also measure network bandwidth. It measures the maximum memory bandwidth of each part of the memory system, including main memory, L1, L2, and L3 caches, framebuffer memory, and register-to-register. For many tests, it performs both sequential memory accesses as well as random memory accesses to provide a more real-world performance estimate. The tests support Linux (Intel), Windows/Cygwin, and Mac OS X. Its core routines are in assembly for x86 and x86-64 architectures with both SSE4 and AVX support. Bandwidth also includes automatic graphing of the results, stored to a BMP image file. The network bandwidth tests support Linux, Mac OS X, and Windows/Cygwin.

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2009-01-28 17:50

x86_64 assembly code was added for 64-bit Linux.
Both 64-bit transfers and 128-bit SSE2 transfers
were implemented. Version 0.16 is really a 64-bit
only release. Use version 0.15 for 32-bit. You
will need Nasm 2 to assemble x86_64 code.

2008-07-12 02:35

Core tests have been converted to assembly code to improve accuracy. This release has switched to microsecond timing for improved accuracy. L1 cache tests have been added.
標籤: Major feature enhancements

2008-07-03 14:00

This release adds compatibility with Windows/Cygwin.

2007-08-15 20:46

64-bit support has been added.
標籤: Minor feature enhancements

2007-07-26 20:26

The L1 cache test has been removed. String library tests have been added. All numbers are now in bytes per second.

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