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How To Force More Threads To Run A Single Core Application?


You can see that there are two or three cores which run more than the others, however all the cores are being utilized in some way or another. I'll try to see if it works tomorrow. This scheduling appears to get overlooked by many people. If you look at an app like Gmail you will notice and interesting phenomenon. his comment is here

If the non-parallelizable portion of the problem is fixed, or grows very slowly with problem size (e.g., O(log n)), then additional processors can increase the possible problem size without limit. Hot Network Questions Why would a scientifically advanced future community believe in multiple gods? Here is a graph of how the cores in the Snapdragon 801 are used when browsing the web using Chrome: Chrome - Active cores on a quad-core phone. If anyone out there has an old dual-PII, could you please tell me if I'm crazy?

Make A Program Use Multiple Cores

Rendering the number 10,958 with the string 1 2 3 4 5 6 7 8 9 Choosing socks for frequent switching cold-warm Word connections more hot questions question feed about us DekasavFeb 21, 2009, 11:53 PM It may use cycles on all 8 cores, but it will only use two cores at any given time, which means it gets no speed increase I have offered an approximation of the problem, which I believe is useful to explain the basics.

Reply anthonyvenable110 says: June 19, 2012 at 7:02 am Reblogged this on anthonyvenable110. I have tried several different earlier versions (XP,Vista,etc) and can't get it to work. It's a very personal thing: how often do you use such applications, and how important is it to you to get a bit of extra performance? How much does having those extra 4 threads help, if at all, with using a single application (game) at a time?

I think its clear today speed in Mhz is very deceiving such as a 2.0 ghz tablet and a 2.0 Ghz in a laptop can be very different in speeds. How To Set Affinity Windows 10 This not only gives them an advantage in single-threaded tasks, but also makes them perform very well in multi-threaded tasks. The most efficient number of people is 4. http://superuser.com/questions/293809/can-a-single-threaded-program-be-made-to-use-multiple-cores Reply Klimax says: June 1, 2012 at 10:11 pm IIRC it might be single core only, but it still has Hyperthreading (two threads).

more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed A game with 2 threads will use 2 cores even if you had 128 cores available. What can my relatives do to minimize their out of pocket expenses on their fathers estate Should I contact the manufacturer if their product allows access to other users' location information? Your original statement was however: "So a multi-core processor should give more throughput than a single core any day right?" I take the ‘any day' to mean that a multi-core processor

How To Set Affinity Windows 10

However, since the Pentium had a superscalar pipeline, it could often perform 2 instructions per cycle, where the 486 did only one at most. Mark says: December 9, 2013 at 10:59 pm This is a very nice explanation i stumbled across when trying to found it if it's worth to spend more on an i7 Make A Program Use Multiple Cores Threads come not free, but with overhead like context switches, and - if data has to be exchanged between threads which is usually the case - various locking mechanisms. Multithreading My application is mainly internet for googling things, ebay etc and simple programs that would probably run fine on a Pentium 1 or 486.

Thank you for crying in this post Scali, you misguided Intel moron. Reply Hambster says: November 13, 2012 at 4:04 am Hi, It's a good post. The irony is that this time it's the ARM CPUs that aren't very impressive in terms of performance per GHz. Notice how at first the big cores are being used and the LITTLE cores are inactive.

There are probably other affinity codes for those of you with more cores, but I'd only be guessing at what they are. Fusion power supply, 1.21 gigawatts. Don't applications need to be written in a special way to use the extra cores? weblink For the OS, a thread is a unit of workload which can be scheduled to execute on a single core.

If all threads are working all of the time, and they all have equal priority, then the scheduler will try to switch threads in and out so that all 5 threads Reply Vishal says: January 24, 2014 at 10:58 am In your opinion, which one is better of the two, Intel Core i3 3220 or AMD A4 5300? thanks Drugo There are two ways.

And the Pentium III and the Athlon were in a tight race towards the GHz mark at the time (with AMD actually winning that race).

Without parallel programming.. Join them; it only takes a minute: Sign up Do threads by default run on more than one core? Years ago I was a technician and still have a Tek 466b storage scope and associated equip I mean to set up to troubleshoot with. This is fast enough for people not to notice a delay.

share|improve this answer edited Jun 23 '13 at 17:26 answered Jun 23 '13 at 14:52 frostschutz 17.5k12844 add a comment| up vote 4 down vote The culprit here should be the Also, if you want to purchase a database server, you've already answered yourself how feasible it is: ‘database server', so you only have to look at database performance, and more specifically, Problems with vertical y-axis alignment Has a major war ever occured and a map before the war looked exactly the same after? As I also said, I was never surprised that Intel brought HT back.

They're probably over at TechNet or another Microsoft run site. fseal View Public Profile Find More Posts by fseal 28 Jul 2012 #4 taxinimon Windows 7 Home Premium 64bit 6 posts Thank you for the replies everyone. So part of the algorithm can be parallel, but another part is implicitly sequential. However I waited until the page was loaded and rendered, and then I moved on to the next page.

Word connections What does this suspicious PHP code do? Single-threaded performance is always a good thing, both in single-threaded and multi-threaded scenarios. I may not like to ‘judge a book by it's cover" but then I do like to have a CLUE from the title. >:-( August 27, 2012 Keith Just a correction. The additional threads may be processed on other cores, but their processing needs are so minor that they probably don't even register in CPU usage stats.

Perhaps the older Celeron system just appeared to work better because the balance worked out better for you (the harddisk, chipset and memory may have been relatively fast compared to the I had to wait! You may find it by drilling down in CPU options or in Hardware monitoring. From this explanation i started to think the i5 was more then fast enough because it has a lot of single threaded performance and such could run a lot of threads,

I'm inclined to go with @EightBitTony's guess; cache invalidation is likely a bigger issue, because every time you flush the cache, the CPU has to wait eons for code and data Do tenured faculty get to micromanage clinical professors and other non-tenured instructors with respect to the classroom? 3 3-hour exams in a row with no time in between. I remember Apple's controversial switch from PowerPC (RISC) to CISC-based Intel around 2005 - but perhaps newer Intel processors (those supporting 64-bit) have also gone by now in the direction of In the browsing test I didn't spend time reading the pages that loaded, as that would have resulted in no CPU use.

jaja good job. When there is more than one core available the scheduler can give one process a slice of time on CPU0, while another process gets a slice of run-time on CPU1.