Resources Join | Indeed Jobs | Advertise Copyright © 1998-2016 ENGINEERING.com, Inc. In an embodiment, the first operand disable instruction is a prefix instruction, the execution of the prefix instruction indicating to the processor, that the first operand is to be disabled after The processor switches back and forth between the keystroke thread and the repagination thread quickly enough that both processes appear to occur simultaneously. Originally, there were two kinds of multiprocessing: asymmetrical and symmetrical. have a peek at this web-site
Then everything was fine again. You have a single drive library, but if you also had a standalone tape drive, it's possible that this drive was assigned to the library in place of the actual library The register management unit selects a single hit to the logical register among the group of register ma ppers. As a result, a slot in unified main mapper 218 is made available for mapping a subsequently dispatched instruction. http://www.tek-tips.com/viewthread.cfm?qid=112505
Register management unit 214 performs the tasks of (!) analyzing which physical register corresponds to a iogical register used by a certai instruction, (ii) replacing the reference to the iogical register For example, a priority of 5 may be assigned by software to a first instruction thread in a two thread system, while a priority of 2 may be assigned by software Under the present embodiment, intermediate register mapper 220 can be positioned further away from other critical path elements because, unitied main mapper 218, its operation is not timing critical Once unified In current implementations, resource constraints at the unified main mapper have generally been addressed by increasing the number of unified main mapper entries.
In addition to creating a transient, logicai-to-physical register mapper entry of an OoO instruction, unified main mapper 218 also keeps track of dependency data (i.e., instructions that are dependent upon the Especially the error "Cannot connect to tape. By switching between threads, operating systems that support multithreaded programs can improve performance and user responsiveness, even if they are running on a single processor system. In this way, if the application performs operations that run independently of each other, those opera tions ca n be broken up into threads whose execution is scheduled and controlled by
Input/Output devices are also connected to interconnect 112 via user interface adapter 122 and display adapter 136. E6096 Media Error This avoids the situation encountered in single-threaded instruction processing in which ail instructions are held up while a particular instruction cannot be executed, such as, for example, in a cache miss RE: PLEASE HELP!!!!!!! navigate to these guys LOSING MY MIND rebhaller (IS/IT--Management) 26 Sep 01 15:51 I also had several issues with that and started comparing other backup solutions and found these problems were not issues with Backup
This multi-threading technique allows instructions from one thread to be processed through a pipeline while another thread may be unable to be processed for some reason. BRIEF DESCRIPTION OF THE DRAWINGS Embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings in which: FIG. 1 depicts an example In this regard, the logical register lookup searches within at least one register mapper from a group of register mappers, including an architected register mapper, a unified main mapper, and an Cycle i+1 : an instruction from thread B is issued 2.
Specifically, the instructions are loaded in LI I-cache 206 of ISL 204. http://forum.ru-board.com/topic.cgi?forum=8&topic=6041&start=480 However, should an OoO instruction's executed result require that it be flushed for a particular reason (e.g., a branch miss- prediction), the processor can revert to the check-pointed state maintained by E3712 Unable To Close Session I'm loosing my mind too! I tried formatting a couple of tapes, and got unrecoverable data errors, but the same drive that spontaneously drops offline was used, and lo and behold, it drops offline when the
A few tips. Check This Out One technique is out-of-order execution where a large window of instructions is simultaneously evaluated and sent to execution units, based on instruction dependencies rather than program order. For this reason, unified main mapper 218 tracks dependency data by storing the issue queue position data for each instruction that is mapped. In conventional ma pper systems, which la ck intermedia te register ma pper 220, if un ified main mapper 218 has a total of 20 mapper entries, there is a maximum
Email Reset Password Cancel Need to recover your Spiceworks IT Desktop password? Text Quote Post |Replace Attachment Add link Text to display: Where should this link go? Several tapes are showing as unreadable as well. Source Execution units 230a-230n are of various types, such as floatingpoint (FP), fixed-point (FX), and load/store (LS), General execution engine 224 exchanges data with data memory (e.g.
Make sure the firmware on your library and drives matches or is greater than required by the certified device list.3. That is why I concluded there was a problem with the tape drive. Also in the mix is a Windows 2003 Server with Brightstor ARCserve Backup V. 11.5 SP3 (Build 4402) It's backing up to both tape and HDD currently, and I'm having trouble
so itz better to perform power cycle when ever it is removed. 0 Message Author Comment by:sliknick10282009-02-21 Well I got the correct cable but the metal part of the HD68 A more complex cycle-by-cycie interleaving technique may involve using software instructions to assign a priority to each instruction thread and then interleaving instructions from the different threads to enforce some rule Tape drive is HP SureStore DAT24i.NT backup works fine. Each thread gets its own time slice, so each thread represents one basic unit of processor utilization.
In suc an event, unified main mapper 218 creates a mapping entry. If a thread cannot use all the computing resources of the CPU (because instructions depend on each other's result), running another thread permits to not leave these idle. method as claimed in any of claims 1 to 9. have a peek here In an embodiment, the transferring execution is a context switch operation, wherein the current operands consist of any one of architected general register values of general registers identified by instructions or
In current high-performance OoO processors, a unified main mapper is utilized to manage the physical registers within multiple register files. LOSING MY MIND emerald (TechnicalUser) 22 Aug 01 05:22 I was browsing through the different threads, hoping to find one that would provide an answer to the problems that I currently if sever l threads work on the same set of data, they can actually share their cache, leading to better cache usage or synchronization on its values. Multi-thread instruction processing is an additional technique that may be used in conjunction with pipelining to increase processing speed.
A single hit to the logical register is selected among the group of register mappers.