Presentation on theme: "Compaq Enterprise Technical Symposium 2001 Porting OpenVMS Applications to Itanium™ Processor Family Gaitan D’Antoni OpenVMS Technical Architect for Application."— Presentation transcript:
Compaq Enterprise Technical Symposium 2001 Porting OpenVMS Applications to Itanium™ Processor Family Gaitan D’Antoni OpenVMS Technical Architect for Application Development Technology Session 1619 Gaitan D’Antoni OpenVMS Technical Architect for Application Development Technology Session 1619
OutlineOutline Introduction Strategy and plans OpenVMS compilers and tools Key differences between Alpha and Itanium™ processor family Moving your application to Itanium™ processor family Q & A
TerminologyTerminology IA-64 Intel® processor architecture Itanium™ processor family - Family of microprocessors that implement IA-64 Itanium Specific member of the family
Strategic Compaq OpenVMS actions Announced the alignment of all 64-bit enterprise servers on Intel® Itanium™ processor family architecture microprocessor Long-term collaborative technology/marketing agreement with Intel® Full port of OpenVMS to new Intel® architecture –If you’re on Alpha, you’re a recompile and requal “away” from being on Itanium™ processor family Enhanced server roadmaps for OpenVMS, NonStop™ Himalaya, Linux, Tru64 UNIX, and Windows customers –Alpha EV6 speedups and EV7 Marvel program –New NonStop™ Himalaya speedups
Alpha Platform Itanium™ processor family Platforms Itanium™ processor family Platforms Transition Period 2006200520042003200220012000200720082009 2010 Madison Itanium OpenVMS Version 7.2 Version 7.3 Version 7.3-x… Future releases providing Continued Enhancement & Support “Post VNext” (H1CY04) for Itanium™ processor family and Alpha Systems OpenVMS/IPF Boot H2CY02 Ship H1CY03 Update H2CY03 EV67EV68 EV7 EV79 McKinley OpenVMS Alpha and Itanium™ processor family porting timeline
May Cross Compilers: CRTL, C. BLISS, IMACRO, Linkers, Librarian OpenVMS 3rd Release H1 02 H2 02 H2 03 H2 03 H1 04 H1 03 OpenVMS Itanium™ processor family port roadmap July/August: 1 st Boot occurs August/September: Working Boot Environment December: Native Compilers - CRTL, C, BLISS, IMACRO H1 03: 1st Release Audience: Key ISVs, Partners, Early Adopters OpenVMS/IPF - Alpha/IPF Common Source CRTL, C, Intel C++, Intel Fortran, BLISS, IMACRO, Java TCP/IP, DECnet Phase IV, DECset components Full Support from Services H2 03: 2nd Release Audience: Key ISVs, Partners, Early Adopters Limited cluster functionality Additional Compilers: Pascal, BASIC,COBOL, LPs: Advanced Server, RTR, DECnet+, XML, Apache, NetBeans Full Support from Services (Internal) First ship Production quality
Compiler plans (1 of 2) C/C++ –CPQ C Looks just like today’s Compaq C (DEC C) Recompile/relink/requal –CPQ I?? C/C++ Intel® based C/C++ C/C++ decision based on file type or switch Will include some features from Compaq C Compiler for moving forward COBOL, BASIC, PASCAL, BLISS, Java –Itanium™ processor family versions of Compaq compilers
Compiler plans (2 of 2) Fortran –Intel® based Fortran IMACRO –Tool to emulate or convert Macro-32 and AMacro code to Itanium™ processor family instructions –Will provide support for Macro-32 (VAX) and Macro (mixed VAX and Alpha) as well as some Itanium™ processor family instructions specific to OpenVMS architectural needs ADA –We will provide an Ada compiler
Development tools DECset development tools –PCA may not be available for the H1 2003 release OpenVMS Debugger Binary translator –There will be a binary translator to translate Alpha images to Itanium™ processor family images –Translation of VAX images is being considered –We do not support translated images that dynamically create/call code –Tell us what you need Compaq Services will be prepared to assist @ ???
Individual Team Enterprise JavaNon-Java 3GL4GL IONA iPortal and partner tools BridgeWorks OpenVMS Application Development EnterpriseToolkit DECset NetBeans BEA WebLogic and partner tools NetBeans With Compaq OpenVMS snap-ins Cognos Software AG TogetherSoft CompuwareOptimalJ CompuwareUniface
So, what’s different? (1 of 3) Calling Standard –Intel® calling standard with OpenVMS modifications Still being designed –All Compaq provided tools will “know” about these changes –Your code that “knows” about the standard may have to change Most code not affected
So, what’s different? (2 of 3) Object file format –ELF/DWARF industry standard ELF - Executable and Linkable Format, IA-64 object code, images, etc. DWARF - Debugging and traceback information (embeded in ELF). –All Compaq provided tools will “know” about these changes –User written code that “knows” the object file format may have to change –Image header “tricks” may no longer work (Flip a bit to turn on/off debugging)
So, what’s different? (3 of 3) Floating point data types –Itanium™ processor family supports IEEE float only –All compilers should be able to deal with F, D, G, S, T, and X (S and T are native IEEE formats) –Document forthcoming with details –Tell us what you need Licensing –We’re investigating the use of FlexLM We need your input @ ???
What code will I need to change? Architecture Specific code –Assembler code Build command files –$ if.not. Alpha ! Assumes VAX Alpha specific compiler built-ins may have to be recoded
What can I do today? Examine your code for known differences and architecture dependencies If you’re using /STANDARD=VAXC to compile your C code today try using /STANDARD=RELAXED_ANSI89 to see what pops out –Will not be an issue for Compaq C but may be an issue for I?? C/C++ Tell us now what concerns you about moving to Itanium™ processor family –Are there tools I haven’t mentioned? Tell us what /VAXC extensions you want in I?? C/C++ @ ???
How to contact us Gaitan.email@example.com I’m here all week Gaitan.firstname.lastname@example.org Pat.email@example.com Pat.firstname.lastname@example.org for /VAXC extensions requests @ ???
For more information Compaq and Intel® Initiative http://www.compaq.com/hps/ipf-enterprise/ Itanium™ processor family architecture: ftp://download.intel.com/design/IA-64/Downloads/archSysSoftware.pdf Itanium™ processor family processor hardware: ftp://download.intel.com/design/IA-64/Downloads/24870101.pdf Software manuals: http://developer.intel.com/design/itanium/manuals.htm