[Info-vax] OpenVMS E9.2 Field Test Begins

[Arne Vajhøj]

On 4/8/2022 2:00 PM, Simon Clubley wrote:
> BTW, talking about performance, I wonder how far away we are from
> being able to run the same test programs on VMS and Linux on the
> same hardware and then compare the performance differences.

It is probably more relevant to compare VMS/x86-64 to VMS/Itanium
than to Linux/x86-64 for now. The next few years are going to more
migration from Alpha and Itanium than competing with Linux.

But to me the logical expectation is that CPU wise C code compiled
with LLVM backend on VMS will run very similar to the same code
compiled with LLVM backend on Linux. The different frontends should
not impact performance much. IO wise we all know that VMS is
not the fastest.

Arne