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by drewg123
1466 days ago
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I worked for a company that did pre-infiniband HPC interconnect drivers (Myricom) in the 2000s. We supported N-different *nixes (Linux, Solaris, FreeBSD, Tru64, Aix, and probably more I'm forgetting), Mac OS X and Windows in the same codebase. At least 50% of the driver and 95% of the userspace code was OS independent. In order to do this, our drivers were not "typical" drivers. Eg, we used ioctls everywhere (even on OSX) for driver/library communication. |
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