Talk:Loongson

Godson related things
See my comments about generally Godson related things in the discussion section about this Yellow Sheep River develops €123 Linux based computer Wikinews article. Paul Kouwelas 06:06, 24 March 2006 (UTC)

Pentium 4
This article goes through a lot of trouble to compare the Godson 2E to an Intel Pentium 4. It's probably worth noting that the P4 completely sucks and was a mistake of a processor. Plus, the chips use different instruction sets and are/were intended to run different applications, so performance is not directly comparable. —Preceding unsigned comment added by 24.15.28.57 (talk • contribs) 14 November 2006


 * So what is your point then. P4 completely suck? Or this processor should not be compared to it.  In both case I have to disagree.  P4 was good when it came out and like all things became obsolete.  As for comparison, well, I don't really see a better alternative.  No two processor are exactly the same, but that is not a condition for comparison.  Yongke 16:42, 24 February 2007 (UTC)


 * That's nice. Feel free to de-emphasise this comparison should you ever return. Chris Cunningham 11:21, 25 February 2007 (UTC)

Complete vaporware?
Does this chip actually exist *ANYWHERE* except in press releases and trade show mockups? I've even asked friends travelling in China to try to find one. Has ANYONE seen a link offering actual coputers for sale, anywhere, ever? &mdash;206.124.29.13 20:28, 29 May 2007 (UTC)
 * It's real machine. Alot of Linux-MIPS leading developers got these machines for free. Look at the http://www.linux-mips.org/wiki/Fulong page. See also http://www.linuxdevices.com/news/NS8003782690.html . You may ask #mipslinux@freenode IRC channel for owners. Alecv 06:29, 30 May 2007 (UTC)
 * Has any Godson/Dragon/etc based system ever been offered for sale to the general public? 71.56.217.150 05:14, 13 June 2007 (UTC)
 * Has any Godson/Dragon/etc based system ever been offered for sale to the general public? 71.56.217.150 05:14, 13 June 2007 (UTC)

There are so far no actual products in the market anywhere in China. although brochures and news release exist, there is nowhere to buy it. The supposed 'producer', and also financial sponsor for this 'product', is in fact a local Chinese furniture-making company. —Preceding unsigned comment added by Ace aniki (talk • contribs) 01:01, 13 June 2008 (UTC)


 * There are more than 1000 machines sold out, and at least 500 distributed to schools since November 2006, including both Loongson 2E and 2F models.

Check it out on www.lemote.com/bbs, their official forum.Helloterran (talk) 09:28, 7 November 2008 (UTC)


 * The first commercially available Godson-powered PCs begin selling to the public TODAY, so nope it's not vaporware. Now anyone can go to Zhongguancun and buy desktop and notebook PCs with this chip as the CPU.See http://tech.sina.com.cn/it/2009-01-08/16292731037.shtml Ufopedia (talk) 11:20, 8 January 2009 (UTC)

Copyright/patent infrigement?
IIRC there were some legal problems with this CPU. It was said that was actually an unlicensed copy of western design, not a proper reimplementation. —Preceding unsigned comment added by Trasz (talk • contribs) 06:24, 17 October 2007 (UTC)


 * There was such an incident. The whole thing started when the Chinese claimed that they produced an indigenous CPU that was not based on any western design. but it was later revealed that the chip is very similiar to MIPS architecture. On 29th July 2005, CAS, the Chinese Academy of Sciences openly denied that this family of CPU was 'a 95% copy of MIPS less 4 copyrighted instructions'. However, on 29th March 2007, news releases said that Loongson CPU signed a partnership with ST Microelectronics, which in turn had bought licence from MIPS technologies to build deivatives of their CPU. It is, therefore, without doubt that the earlier allegations were probably true, that this family of CPU are but clones of western technologies. The only thing is that the company made a coverup later on by acquiring the necessary licence through partnership with ST Microelectronics. So now, this CPU, if it is to ever hit the market, is already 'legal'. But it probably has little to do with the claim of it being 'indigenous'. —Preceding unsigned comment added by Ace aniki (talk • contribs) 05:53, 13 June 2008 (UTC)


 * Sir, you are probably not working in the IC industry. Even if you have a completely novel and indigenous implementation of a instruction set(here, it's MIPS), you still have to pay for the instruction set as long as it is protected by the patent. The only purpose of signing a partnership with ST Microelectronics is most likely to get a license to sell the chip in the west market. if you are interested, you'll find many Chinese/Taiwanese designed ICs in the market. For example, vimicro is the largest webcam chip provider. By the way, it's not hard to implement a CPU nowdays.Jacktance (talk) 14:33, 12 February 2009 (UTC)

Clearence of some absurd accusations
MIPS is a open Instruction Set Architecture. Only a tiny fraction of the instructions in a typical MIPS system are patented. In fact there are only 4 instructions used in Loongson processor that need official permission from MIPS. Since ST Electronics already acquired such permission, these CPUs do not violate any copyright laws, and it's legal to produce and sell them in most countries including United States.

Also, there have never been any official claim that this Loongson processor is indigenous. It's stated clear that it's a MIPS based design back from the beginning.

Editors of this page might need to know that physical implementations under some certain architecture can be very different. There have been hundreds of MIPS family processors designed and taped, most of them by 3rd party companies and institutions. I hope this article can be more focused on technology details, instead of meaningless political allegations.Helloterran (talk) 10:15, 7 November 2008 (UTC)

Dutch subnotebook
The Register has an article on a Loongson powered mini notebook computer.

http://www.reghardware.co.uk/2008/04/11/dutch_vendor_touts_jisus_laptop/

Hcobb (talk) 20:00, 11 April 2008 (UTC)

Controversies section
I removed this section because it was badly written, only had chinese language sources, and much of the subject matter was admittedly speculation. If there are verifiable sources on the matter, perhaps discuss them here before adding the section back? --Starwed (talk) 07:22, 16 June 2008 (UTC)

Van der Led
The following section was removed by an IP:
 * The Dutch company Van der Led announced on April 2008 a 8.9" subnotebook under the name of Jisus for 299.99€ with an special edition of Ubuntu Linux.

Even if I agree that this is scam/fraud the device was actually announced and got good media coverage. I think it has to be re-added but stating the arguments to believe it's scam. Hopefully the Gdium is real. —mnemoc (?) —Preceding undated comment was added at 13:26, 25 August 2008 (UTC)


 * I just re-added a modified version of the paragraph. Sadly no valid reference has officially said vanderled is scam, just unrefuted comments in every post related to the product. --—mnemoc (?) 08:12, 17 September 2008 (UTC)

Chinese characters?
It says, "The primary purpose of the chip is to run localized Chinese versions of Linux, with emphasis on Chinese character support." Does the chip really have built-in functionality to deal with CJK? That doesn't sound plausible to me. Either way, this sentence should be clarified. Superm401 - Talk 22:47, 27 December 2008 (UTC)


 * I would imagine the intended meaning was that the "localized Chinese versions of Linux" emphasize Chinese character support. There is no obvious reason that the CPU should care at all about what character set is being used by user-run software. —  Aluvus  t/c 23:28, 31 December 2008 (UTC)

Dog shit?
Seriously? -128.61.82.232 (talk) 19:55, 12 April 2010 (UTC)


 * Somebody seems to think so. Mind  matrix  20:06, 12 April 2010 (UTC)


 * The term used for dog shit at Mandarin_Chinese_profanity is different from this, and |en Google suggests that the meaning of the last character on its own is not shit. On the other hand it's also not leftovers (at least, not on its own).  I would guess that if it does mean dog shit then it might be a more euphemistic term -- perhaps like 'dog droppings' -- or that it's from a dialect other than standard Mandarin. --ToobMug (talk) 09:37, 29 June 2010 (UTC)
 * I just asked a Chinese person, and he said that it's "stuff that the dog doesn't want", which sounds more like leftovers than poop. Considering the things I've seen dogs eat I'd say that's even more disparaging. --ToobMug (talk) 18:17, 29 June 2010 (UTC)
 * I just asked another Chinese person -- Cantonese this time -- and he said that 'shit' and 'leftovers' are homophones, but the characters are unambiguously different. Perhaps it's a pun, but the proper translation is clearly 'leftovers'. --ToobMug (talk) 18:36, 1 July 2010 (UTC)

OS support and bad ABIs
It looks like the default Linux installations in the Fuloong-2F (and presumably the rest of Lemote's offerings) uses the o32 ABI, which effectively restricts userspace to a MIPS-II feature set (ie., no 64-bit). This may cause some confusion (or at least, it caused me some confusion) about whether or not the chip is really a 64-bit processor.

OpenBSD uses a 64-bit userspace (I32LP64). I haven't found a polished mips64el Linux distribution, yet. However, I think the ideal would be to use the N32 ABI in most situations, as that allows 64-bit arithmetic without burning up the cache on large data structures.

Is it worth mentioning the situation with OS support? --ToobMug (talk) 12:33, 11 July 2010 (UTC)

Information to improve the article
I've read the article two times to make sure I didn't miss anything. Article should explain (and it doesn't):
 * 1) What is the purpose of the Loongson project? What was the motivation for creating a new processor?
 * 2) What is its market niche?
 * 3) How does it compare to Intel/AMD processors?

This information is rather crucial, IMO. Presently the articles says that there is this Chinese processor, but... what of it? Why does it matter? Ungomma (talk) 05:54, 1 September 2011 (UTC)
 * Perhaps the most important reason why Loongson is pushed forward is the goal to achieve independence from foreign CPU imports. http://techcrunch.com/2011/03/09/china-switches-to-homegrown-cpus-for-supercomputers-cites-dependence-on-foreign-technology/ Chithanh 03:17, 6 December 2011 (UTC) — Preceding unsigned comment added by Chithanh (talk • contribs)

I changed a dimension in the article from millibit (mb) to MegaByte (MB).-BG — Preceding unsigned comment added by 75.159.231.69 (talk) 17:41, 25 May 2013 (UTC)

I have two photos of dual/ quad 3A/3B motherboard anyone want to use it?
dual CPU workstation board http://www.loongson.cn/uploadfile/201009/20100921162102487.jpg

2 x quad CPU HPC board in a 1U rank http://images.enet.com.cn/2010/0423/45/9883784.jpg

GS3B will have exactly the same pin layout as GS3A. — Preceding unsigned comment added by 183.37.46.47 (talk) 03:11, 5 December 2011 (UTC)
 * That looks awesome! Please add it and do not forget to clear license permissions please! Thanks!! 77.180.210.7 (talk) 18:17, 11 May 2012 (UTC)

NT support?
Article claims NT 4.0 support, which is very unlikely - i.e. there aren't any known Loongson machines with ARC firmware, nor are there HALs and drivers. — Preceding unsigned comment added by 209.51.184.11 (talk) 22:28, 18 March 2013 (UTC)

List of MIPS microprocessor cores
Would somebody please add this processors to the right spot: List_of_MIPS_microprocessor_cores. Thank you Semsi Paco Virchow (talk) 23:29, 4 July 2013 (UTC)

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LoongArch documentation: binutils, then what?
(This is too informal to be in the article.) With binutils getting some new instruction definitions, we are one step closer to actually using these features in real software. There's still no documentation describing the behavior concretely. Common sense is enough to deduce what they do from the names, and loongson's qemu fork gives info on behavior.

A comparison with the unofficial list (in large part an interpretation of the qemu fork code) shows that the binutil submission is complete. The community argues that there are naming inconsistencies; I expect binutils people to adopt some of their aliases. (Binutils adopted "ret" from the community.)

It's still on the LoongArch people to write proper documentation. It's grueling work for the average engineer -- I hope they have a proper "documentation guy". Artoria2e5 🌉 16:34, 15 August 2023 (UTC)