3 ms·
AMD64 supports only 48-bit addresses, and is still the most popular server ISA. You have: 2^48 byte You want: tebibyte 2^48 byte = 256 tebibyte
by Hello71 5y ago
AMD64 supports only 48-bit addresses, and is still the most popular server ISA.
You have: 2^48 byte
You want: tebibyte
2^48 byte = 256 tebibyte
2^48 byte = (1 / 0.00390625) tebibyte
how many servers do you have with more than 256 TiB of RAM?
- fulafel 5y ago56-bit support was specced and had software support already in ~2016. 48 bits is not a hard architecture limitation. see eg https://www.kernel.org/doc/html/latest/x86/x86_64/5level-paging.html https://www.kernel.org/doc/html/latest/x86/x86_64/5level-pag...
- toast0 5y agoIt's not only ram that goes in that 256 TB, memory mapped i/o uses it too. You probably don't have TB of video card RAM, but maybe some flash devices offer the whole thing memory mapped?