Porting OpenVMS to the Itanium Processor Family (2003)[pdf]

by naveson 9/29/2024, 4:35 PMwith 28 comments

by twoodfinon 9/29/2024, 5:38 PM

The Apache #’s pretty much give the game away: An Itanium clocked 50% higher was losing to a 2yo Alpha by about 20% on throughput at peak.

VLIW made sense when Intel wanted to win the FP-heavy workstation market. But while it was in development, integer-heavy web workloads became dominant and that was basically the ballgame.

by sillywalkon 9/29/2024, 8:22 PM

On a similar note, porting Linux to Itanium — A System Implementor’s Tale [PDF]

https://www.usenix.org/legacy/event/usenix05/tech/general/gr...

and, NonStop on Itanium [PDF]:

https://www.researchgate.net/profile/David_Bernick/publicati...

by pdwon 9/29/2024, 7:57 PM

Amusingly similar to the much more recent slide decks about the x86 port, e.g. https://vmssoftware.com/docs/State_of_Port_20171006.pdf