Cody Boone Ferguson
09ff59ee85
The following files (not all of these files were checked yet) were
modified (when mentioning README.md I also rebuilt the index.html file):
2024/burton/README.md
2024/endoh1/README.md
2024/endoh1/try.sh
172 lines
5.1 KiB
Bash
Executable File
172 lines
5.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# try.sh - demonstrate 2024/endoh1
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# make sure CC is set so that when we do make CC="$CC" it isn't empty. Doing it
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# this way allows us to have the user specify a different compiler in an easy way.
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#
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if [[ -z "$CC" ]]; then
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CC="cc"
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fi
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# make sure the program has been built
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#
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MAKE=$(command -v gmake)
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${MAKE:=make} CC="$CC" all >/dev/null || exit 1
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# clear the screen
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#
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clear
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# determine of make support -j2
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#
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${MAKE} -j 2 prog.c >/dev/null 2>&1 < /dev/null
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status="$?"
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if [[ $status -ne 0 ]]; then
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JOBS="1"
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echo "NOTE: make does not support -j 2, so make out.ppm will only use a single CPU job." 1>&2
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else
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# determine how parallel we want to make
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#
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export RESERVE="-2" # our best guess is to oversubscribing by 2 cores
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if [[ $RESERVE -lt 0 ]]; then
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echo "NOTE: We will oversubscribe by $((-RESERVE)) CPU cores." 1>&2
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else
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echo "NOTE: We will reserve $RESERVE CPU cores." 1>&2
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fi
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NPROC_TOOL=$(type -P nproc)
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export RESERVE NPROC_TOOL NPROC JOBS SIZE
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if [[ -z "$NPROC_TOOL" ]]; then
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NPROC="4" # we lack nproc so we just guess
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echo "NOTE: The nproc utility was not found so we simply guess you have $NPROC CPU cores." 1>&2
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else
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NPROC=$(nproc)
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echo "NOTE: The nproc utility found $NPROC CPU cores." 1>&2
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fi
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((JOBS=NPROC-RESERVE))
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if [[ $JOBS -ge 2 ]]; then
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echo "NOTE: We will make out.ppm using $JOBS parallel make jobs." 1>&2
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else
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JOBS="1"
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echo "NOTE: We will make out.ppm using just a single CPU." 1>&2
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fi
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fi
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echo 1>&2
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# build an 8x8 image
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#
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SIZE="8"
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echo "NOTE: This next step will take a bit (about 75 seconds on a single CPU core) to build the ${SIZE}x${SIZE} image." 1>&2
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if [[ $JOBS -ge 2 ]]; then
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echo 1>&2
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echo "NOTE: With $JOBS make jobs in parallel your time will be less." 1>&2
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echo "NOTE: For example, with 6 jobs in parallel, this might complete in about 20 seconds" 1>&2
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fi
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echo 1>&2
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read -r -n 1 -p "Press any key to build an ${SIZE}x${SIZE} image: " 1>&2
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echo 1>&2
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rm -f "$SIZE.ppm"
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rm -rf pixel
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if [[ $JOBS -ge 2 ]]; then
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time ${MAKE} -j "$JOBS" out.ppm H="$SIZE" W="$SIZE"
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else
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time ${MAKE} out.ppm H="$SIZE" W="$SIZE"
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fi
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mv -f -v out.ppm "$SIZE.ppm"
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echo 1>&2
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echo "Now open $SIZE.ppm in a graphics viewer in a separate window." 1>&2
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echo 1>&2
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echo 'NOTE: You may have to magnify it to see it: do not worry: better images will be created in the next steps.' 1>&2
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echo 1>&2
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# build a 32x32 image
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#
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SIZE="32"
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echo "NOTE: This next step will take a while (about 20 minutes using a single CPU core) to build the ${SIZE}x${SIZE} image." 1>&2
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if [[ $JOBS -ge 2 ]]; then
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echo 1>&2
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echo "NOTE: With $JOBS make jobs in parallel your time will be less." 1>&2
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echo "NOTE: For example, with 6 jobs in parallel, this might complete in about 5.5 minutes" 1>&2
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fi
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echo 1>&2
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echo 'NOTE: The files, ref.32.png, ref.128.png, and ref.512.png, contains a copies of what the next 3 steps will produce,' 1>&2
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echo 'NOTE: in case you wish to abort.' 1>&2
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echo 1>&2
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read -r -n 1 -p "Press any key to build an ${SIZE}x${SIZE} image: " 1>&2
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echo 1>&2
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rm -f "$SIZE.ppm"
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rm -rf pixel
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if [[ $JOBS -ge 2 ]]; then
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time ${MAKE} -j "$JOBS" out.ppm H="$SIZE" W="$SIZE"
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else
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time ${MAKE} out.ppm H="$SIZE" W="$SIZE"
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fi
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mv -f -v out.ppm "$SIZE.ppm"
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echo 1>&2
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echo "Now open $SIZE.ppm in a graphics viewer in a separate window." 1>&2
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echo 1>&2
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echo 'NOTE: For an even better images, complete the next 2 steps.' 1>&2
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echo 1>&2
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# build a 128x128 image
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#
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SIZE="128"
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echo "NOTE: This next step will take LONG TIME (about of 5.5 hours on 1 CPU core) to build the ${SIZE}x${SIZE} image!" 1>&2
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if [[ $JOBS -ge 2 ]]; then
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echo 1>&2
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echo "NOTE: With $JOBS make jobs in parallel your time will be less." 1>&2
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echo "NOTE: For example, with 6 jobs in parallel, this might complete in about 1.5 hours" 1>&2
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fi
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echo 1>&2
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echo 'NOTE: The files, ref.128.png, and ref.512.png, contains a copies of what the next 2 steps will produce,' 1>&2
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echo 'NOTE: in case you wish to abort.' 1>&2
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echo 1>&2
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read -r -n 1 -p "Press any key to build an ${SIZE}x${SIZE} image: " 1>&2
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echo 1>&2
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rm -f "$SIZE.ppm"
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rm -rf pixel
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if [[ $JOBS -ge 2 ]]; then
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time ${MAKE} -j "$JOBS" out.ppm H="$SIZE" W="$SIZE"
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else
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time ${MAKE} out.ppm H="$SIZE" W="$SIZE"
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fi
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mv -f -v out.ppm "$SIZE.ppm"
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echo 1>&2
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echo "Now open $SIZE.ppm in a graphics viewer in a separate window." 1>&2
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echo 1>&2
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# build a 512x512 image
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#
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SIZE="512"
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echo "NOTE: This next step will take VERY LONG TIME (on the order of 3.5 days using just 1 core) to build the ${SIZE}x${SIZE} image!!!" 1>&2
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if [[ $JOBS -ge 2 ]]; then
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echo 1>&2
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echo "NOTE: With $JOBS make jobs in parallel your time will be less." 1>&2
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echo "NOTE: For example, with 6 jobs in parallel, this might complete in about 23.5 hours" 1>&2
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fi
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echo 1>&2
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read -r -n 1 -p "Press any key to build an ${SIZE}x${SIZE} image: " 1>&2
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echo 1>&2
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rm -f "$SIZE.ppm"
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rm -rf pixel
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if [[ $JOBS -ge 2 ]]; then
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time ${MAKE} -j "$JOBS" out.ppm H="$SIZE" W="$SIZE"
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else
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time ${MAKE} out.ppm H="$SIZE" W="$SIZE"
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fi
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mv -f -v out.ppm "$SIZE.ppm"
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echo 1>&2
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echo "Now open $SIZE.ppm in a graphics viewer in a separate window." 1>&2
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echo 1>&2
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# All Done !!! -- Jessica Noll, Age 2
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#
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exit 0
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