1/66Bridging the Gap: Writing Portable Programs for CPU and GPU using CUDA Thomas Mejstrik Sebastian Woblistin 2/66Content 1 Motivation Audience etc.. Cuda crash course Quiz time 2 Patterns Oldschool Thank you 1 Motivation 2 Patterns 3 The dark path 4 Cuda proposalBridging the Gap: Writing Portable Programs for CPU and GPU Paper: Thomas Mejstrik, Sebastian Woblistin, host device – Generic programming

that matters, and leaving the rest in a compressed form.3. Interpreted programs tend to be more portable. Assuming a machine- independent representation, such as high-level source code or virtual machine nonportable operations, but that’s a different matter.) (read)3. Interpreted programs tend to be more portable. Assuming a machine- independent representation, such as high-level source code or virtual machine nonportable operations, but that’s a different matter.) (read)3. Interpreted programs tend to be more portable. Assuming a machine- independent representation, such as high-level source code or virtual machine

Libraries Libraries augment compiler optimizations for Performance Portable programs Use open standards to run Performance Portable code on new generation, or different vendor’s, hardware with compiler Backends EmulatedGeneric SYCL Portable across any implementation Interoperable SYCL Portable across any implementation with the same backend Vendor-specific SYCL Non-portable An application written to to the core SYCL specification is portable to any SYCL implementation 47Generic SYCL Portable across any implementation Interoperable SYCL Portable across any implementation with the same backend

for it to download. You should either see a window Identifying Your System Architecture exe msi portable giving you the option to save the file, or a pop-up appear in your web browser with the file’s hold raster images. Inkscape can save directly to PDF. To do so, do File ‣ Save a Copy, and select Portable Document Format (*.pdf) from the list of available file formats at the bottom. Caution Never save file format, for use e.g. with LibreOffice Optimised SVG (*.svg) SVG file optimized for size Portable Document Format (*.pdf) standardized document exchange file format HP Graphics Language plot file

shortcuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 7 Porting and portable code 95 7.1 Free Pascal compiler modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . Best practices for porting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 7.4 Writing portable code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 8 Utilities that come (where n can be 0..9) Undo ALT-BACKSPACE Open File at cursor CTRL-ENTER 94 Chapter 7 Porting and portable code 7.1 Free Pascal compiler modes The Free Pascal team tries to create a compiler that can compile

hold raster images. Inkscape can save directly to PDF. To do so, do File ‣ Save a Copy, and select Portable Document Format (*.pdf) from the list of available file formats at the bottom. Caution Never save canvas object OpenDocument drawing (*.odg) open diagram file format, for use e.g. with LibreOffice Portable Document Format (*.pdf) standardized document exchange file format PovRay (*.pov) (paths and shapes file format, see jp2 pnm (*.pbm) portable bitmap file format (black and white only) pcx (*.pcx) ZSoft picture exchange raster graphics file format pnm (*.pgm) portable graymap file format (grayscale)

hold raster images. Inkscape can save directly to PDF. To do so, do File ‣ Save a Copy, and select Portable Document Format (*.pdf) from the list of available file formats at the bottom. Caution Never save canvas object OpenDocument drawing (*.odg) open diagram file format, for use e.g. with LibreOffice Portable Document Format (*.pdf) standardized document exchange file format PovRay (*.pov) (paths and shapes file format, see jp2 pnm (*.pbm) portable bitmap file format (black and white only) pcx (*.pcx) ZSoft picture exchange raster graphics file format pnm (*.pgm) portable graymap file format (grayscale)

hold raster images. Inkscape can save directly to PDF. To do so, do File → Save a Copy, and select Portable Document Format (*.pdf) from the list of available file formats at the bottom. Caution: Never save canvas object OpenDocument drawing (*.odg) open diagram file format, for use e.g. with LibreOffice Portable Document Format (*.pdf) standardized document exchange file format PovRay (*.pov) (paths and shapes file format, see jp2 pnm (*.pbm) portable bitmap file format (black and white only) pcx (*.pcx) ZSoft picture exchange raster graphics file format pnm (*.pgm) portable graymap file format (grayscale)

hold raster images. Inkscape can save directly to PDF. To do so, do File → Save a Copy, and select Portable Document Format (*.pdf) from the list of available file formats at the bottom. Caution: Never save canvas object OpenDocument drawing (*.odg) open diagram file format, for use e.g. with LibreOffice Portable Document Format (*.pdf) standardized document exchange file format PovRay (*.pov) (paths and shapes file format, see jp2 pnm (*.pbm) portable bitmap file format (black and white only) pcx (*.pcx) ZSoft picture exchange raster graphics file format pnm (*.pgm) portable graymap file format (grayscale)