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Hi All, In continuation of the previous SPIR introduction email here is a link to the specification: http://www.khronos.org/registry/cl/specs/spir_spec-1.0-provisional.pdf The first topic which we would like to discuss is "SPIR portability". I will send soon an additional mail which will help in leading the discussion on this topic. Thanks and happy reading, Boaz -----Original Message----- From: llvmdev...

Greetings All, I am sending this mail on behalf of the OpenCL Khronos members. **** Introduction **** Lately, Khronos has ratified a new provisional specification which is called SPIR. This specification standardizes an intermediate representation for the OpenCL kernel language. It is based on LLVM infrastructure and this is why I am sending this mail to the LLVM...

...tics? And what is their purpose? (b) Why disallow type conversion for vector types? (ss. 3.3) Cheers, James On Tue, 2012-09-11 at 12:56 +0100, Ouriel, Boaz wrote: > Hi All, > > In continuation of the previous SPIR introduction email here is a link to the specification: > http://www.khronos.org/registry/cl/specs/spir_spec-1.0-provisional.pdf > > The first topic which we would like to discuss is "SPIR portability". > I will send soon an additional mail which will help in leading the discussion on this topic. > > Thanks and happy reading, > Boaz > >...

...at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] > On Behalf Of James Molloy > Sent: Tuesday, September 11, 2012 8:49 AM > To: Ouriel, Boaz > Cc: cfe-dev at cs.uiuc.edu; llvmdev at cs.uiuc.edu > Subject: Re: [LLVMdev] SPIR provisional specifciation is now available > in the Khronos website > > Hi Boaz, > > I have a couple of specific questions: > > (a) You mention special calling conventions and adding them to LLVM. > What are their semantics? And what is their purpose? [Villmow, Micah] One purpose is to differentiate between kernel and device function...

...at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] > On Behalf Of James Molloy > Sent: Tuesday, September 11, 2012 8:49 AM > To: Ouriel, Boaz > Cc: cfe-dev at cs.uiuc.edu; llvmdev at cs.uiuc.edu > Subject: Re: [LLVMdev] SPIR provisional specifciation is now available > in the Khronos website > > Hi Boaz, > > I have a couple of specific questions: > > (a) You mention special calling conventions and adding them to LLVM. > What are their semantics? And what is their purpose? [Villmow, Micah] The semantics of the new calling conventions are as follows: spirf...

...llvmdev-bounces at cs.uiuc.edu] >> On Behalf Of James Molloy >> Sent: Tuesday, September 11, 2012 8:49 AM >> To: Ouriel, Boaz >> Cc: cfe-dev at cs.uiuc.edu; llvmdev at cs.uiuc.edu >> Subject: Re: [LLVMdev] SPIR provisional specifciation is now available >> in the Khronos website >> >> Hi Boaz, >> >> I have a couple of specific questions: >> >> (a) You mention special calling conventions and adding them to LLVM. >> What are their semantics? And what is their purpose? > [Villmow, Micah] One purpose is to differentiate betw...

...inal Message----- From: Villmow, Micah [mailto:Micah.Villmow at amd.com] Sent: Wednesday, September 12, 2012 00:03 To: James Molloy Cc: James Molloy; Ouriel, Boaz; cfe-dev at cs.uiuc.edu; llvmdev at cs.uiuc.edu Subject: RE: [cfe-dev] [LLVMdev] SPIR provisional specifciation is now available in the Khronos website > -----Original Message----- > From: mankeyrabbit at gmail.com [mailto:mankeyrabbit at gmail.com] On Behalf > Of James Molloy > Sent: Tuesday, September 11, 2012 1:45 PM > To: Villmow, Micah > Cc: James Molloy; Ouriel, Boaz; cfe-dev at cs.uiuc.edu; llvmdev at cs.uiuc.ed...

...rom: Villmow, Micah [mailto:Micah.Villmow at amd.com] > Sent: Wednesday, September 12, 2012 00:03 > To: James Molloy > Cc: James Molloy; Ouriel, Boaz; cfe-dev at cs.uiuc.edu; llvmdev at cs.uiuc.edu > Subject: RE: [cfe-dev] [LLVMdev] SPIR provisional specifciation is now available in the Khronos website > > > >> -----Original Message----- >> From: mankeyrabbit at gmail.com [mailto:mankeyrabbit at gmail.com] On Behalf >> Of James Molloy >> Sent: Tuesday, September 11, 2012 1:45 PM >> To: Villmow, Micah >> Cc: James Molloy; Ouriel, Boaz; cfe-dev a...

...instructions - As Micah mentioned before, the restrictions are there because we are only looking at this for OpenCL at this time. Hence, we currently only map what OpenCL supports. However, I agree that this might make some optimizations incompatible with SPIR. Let me discuss this a bit further in Khronos and come back with additional feedback. Thanks, Boaz -----Original Message----- From: mankeyrabbit at gmail.com [mailto:mankeyrabbit at gmail.com] On Behalf Of James Molloy Sent: Wednesday, September 12, 2012 11:08 To: Ouriel, Boaz Cc: cfe-dev at cs.uiuc.edu; llvmdev at cs.uiuc.edu; Villmow, Mic...

...instructions - As Micah mentioned before, the restrictions are there because we are only looking at this for OpenCL at this time. Hence, we currently only map what OpenCL supports. However, I agree that this might make some optimizations incompatible with SPIR. Let me discuss this a bit further in Khronos and come back with additional feedback. > > Thanks, > Boaz > > -----Original Message----- > From: mankeyrabbit at gmail.com [mailto:mankeyrabbit at gmail.com] On Behalf Of James Molloy > Sent: Wednesday, September 12, 2012 11:08 > To: Ouriel, Boaz > Cc: cfe-dev at cs.uiuc...

It looks like SGI has an open source project called dmSDK (digital media SDK) that is similar in some ways to the goals of the Xiph.org projects. Apparently it's the basis for OpenML, which is run by the Khronos SIG, which looks like a consortium made up of various companies like S3, SGI, and Intel. You can find more about dmSDK at http://oss.sgi.com and more about OpenML and Khronos SIG at http://www.khronos.org I'm surprised that no one's found these before I did today. Posts on the dmSDK mai...

...mankeyrabbit at gmail.com] On Behalf > Of James Molloy > Sent: Wednesday, September 12, 2012 12:18 PM > To: Ouriel, Boaz > Cc: cfe-dev at cs.uiuc.edu; llvmdev at cs.uiuc.edu; Villmow, Micah > Subject: Re: [cfe-dev] [LLVMdev] SPIR provisional specification is now > available in the Khronos website > > Hi Boaz, David, > > Thanks for taking my responses on board. > > > 1. Adding the new calling conventions - It seems like the appropriate > thing to do vs. metadata. Some OpenCL backends can choose to implement > this calling convention and use it during cod...

On Sep 6, 2012, at 4:33 PM, "Ouriel, Boaz" <boaz.ouriel at intel.com> wrote: > **** Introduction **** > Lately, Khronos has ratified a new provisional specification which is called SPIR. > This specification standardizes an intermediate representation for the OpenCL kernel language. > It is based on LLVM infrastructure and this is why I am sending this mail to the LLVM mailing list. > Khronos members woul...

...ent portability issues, which exist in OpenCL "C" or in C99. It is clear that OpenCL programs could be written in a way which make them non portable and very device specific. Such programs will never be portable. In addition, some corner case scenario's which have been identified by Khronos members have been disallowed in SPIR. So, SPIR aims at being portable but not for every scenario. 1) ****Portability between Devices with different address width (32 vs. 64 bits)**** During the design stages, Khronos members needed to decide on its philosophy when it comes to dealing with the a...

...VIDIA GT 220 with the 280.13 drivers on Ubuntu 11.04(64-bit) and I'm building W.I.N.E(32-bit version) from source. So how do I compile in OpenCL support you ask? Code: cd /usr/include #make directorty# sudo mkdir CL cd CL #download opencl headers# sudo wget http://www.khronos.org/registry/cl/api/1.1/cl_ext.h sudo wget http://www.khronos.org/registry/cl/api/1.1/cl_gl_ext.h sudo wget http://www.khronos.org/registry/cl/api/1.1/cl_gl.h sudo wget http://www.khronos.org/registry/cl/api/1.1/cl.h sudo wget http://www.khronos.org/registry/cl/api/1.1/cl_platform.h...

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hi, anyone knows whats going on with that Khronos group, OpenGL ES and stuff.. im quite confused as when/why/how did that come to be, but more importantly - do we have any use of it on Linux with desktop architectures.. 1.) can OpenGL ES be used on PC, x86 platform? emulator maybe? 2.) is OpenGL ES just a specification or are there some drive...

...> To: llvmdev at cs.uiuc.edu > Subject: Re: [LLVMdev] "SPIR" ? A Standard Portable IR for OpenCL > Kernel Language > > On Sep 6, 2012, at 4:33 PM, "Ouriel, Boaz" <boaz.ouriel at intel.com> > wrote: > > > **** Introduction **** > > Lately, Khronos has ratified a new provisional specification which is > called SPIR. > > This specification standardizes an intermediate representation for > the OpenCL kernel language. > > It is based on LLVM infrastructure and this is why I am sending this > mail to the LLVM mailing list. &g...

...12 1:17 PM > To: James Molloy > Cc: Villmow, Micah; Carlos Sánchez de La Lama; Ouriel, Boaz; pocl- > devel at lists.sourceforge.net; cfe-dev at cs.uiuc.edu; llvmdev at cs.uiuc.edu > Subject: Re: [pocl-devel] [cfe-dev] [LLVMdev] SPIR provisional > specification is now available in the Khronos website > > On 09/28/2012 07:45 PM, James Molloy wrote: > > That would be a simple, reasonable restriction that would stop > > potentially maliciously horrible test cases causing all CPU SPIR > > clients to write upwards of a hundred lines of conversion code. > > Are...

Hi guys, > So it is valid SPIR, as the specification stands, to manipulate __local > variables as Constants in a way that is extremely difficult to undo. That > is, in order to transform SPIR to code that can run on a CPU, the > GlobalVariable (which is a subclass of Constant) must be replaced with a > dynamically calculated Value (which is not a subclass of constant). What about