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==== [[ACS]] ==== | ==== [[ACS]] ==== | ||
if [[ACS]] is enabled on your machine. On PCI-E platforms bandwidth could be really low if ACS is enabled. interfere with GPU Direct by redirecting all PCI point-to-point traffic to the CPU root complex, causing a significant performance reduction or even a hang | if [[ACS]] is enabled on your machine. On PCI-E platforms bandwidth could be really low if ACS is enabled. interfere with GPU Direct by redirecting all PCI point-to-point traffic to the CPU root complex, causing a significant performance reduction or even a hang. The ACS(access control services) need to be disabled for proper P2P bandwidth. | ||
Latest revision as of 16:57, 18 March 2023
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ACS
if ACS is enabled on your machine. On PCI-E platforms bandwidth could be really low if ACS is enabled. interfere with GPU Direct by redirecting all PCI point-to-point traffic to the CPU root complex, causing a significant performance reduction or even a hang. The ACS(access control services) need to be disabled for proper P2P bandwidth.