released Update 3 on Tuesday, taking Linux to multiprocessor heights previously reserved for the Unix operating system after which Linux is modeled.is the leading commercial version of the open-source operating system. Red Hat
New processor technology coming to market means that supporting 64 processors no longer necessarily means a customer has a multimillion-dollar refrigerator-size server. One change is the arrival of multicore chips, which have multiple processing engines on a single slice of silicon. Another change is multithreading, in which a single processor core can run more than one instruction sequence at the same time.
Red Hat's multiprocessor support is for "logical" processors; a server with 64 logical processors could have 64 single-core processors; 16 dual-core, dual-thread Xeon processors as in the IBM x460 server; or 16.
RHEL already supported 64-processor Itanium servers. The update extends that level of support to machines with IBM's Power processor. In addition, Update 3 includes a "technology preview" of support for as many as 256 Itanium processors and 128 Power processors.
Another change with the new version is support for Intel's "Montecito" processor, the first dual-core Itanium model. It's expected to ship from Intel in the second quarter and arrive in Hewlett-Packard servers in the third quarter.
Red Hat added a technology preview version of the, which today is used chiefly to link many machines into a high-performance technical computing cluster.