lab1 done
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10
.gitignore
vendored
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10
.gitignore
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# Xmake cache
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.xmake/
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build/
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compile_commands.json
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# MacOS Cache
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.DS_Store
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# Vim swap files
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*.swp
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# Temporary files
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*~
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# Makefile for building mpi_hello_world from mpi_hello_world.c
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MPICC ?= mpicc
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MPIRUN ?= mpirun
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CFLAGS ?= -O2 -Wall
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SRC := mpi_hello_world.c serial_pi.c mpi_pi.c
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TARGET := $(basename $(SRC))
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.PHONY: all clean run
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all: $(TARGET)
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mpi_%: mpi_%.c
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$(MPICC) $(CFLAGS) -o $@ $<
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serial_%: serial_%.c
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$(CC) $(CFLAGS) -o $@ $<
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run: $(TARGET)
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$(MPIRUN) -np 4 ./$@
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clean:
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rm -f $(TARGET)
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#!/usr/bin/env bash
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set -euo pipefail
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# cd to the directory where this script lives
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cd "$(dirname "$0")"
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echo "Running make..."
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make
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# detect MPI launcher
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if command -v mpirun >/dev/null 2>&1; then
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MPI_LAUNCHER=mpirun
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MPI_FLAG="-np"
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elif command -v mpiexec >/dev/null 2>&1; then
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MPI_LAUNCHER=mpiexec
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MPI_FLAG="-n"
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else
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echo "Error: neither mpirun nor mpiexec found in PATH." >&2
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exit 2
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fi
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# detect number of processes (fallback to 4)
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if command -v nproc >/dev/null 2>&1; then
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NP=$(nproc)
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elif [ -n "${NUMBER_OF_PROCESSORS-}" ]; then
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NP=$NUMBER_OF_PROCESSORS
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else
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NP=4
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fi
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echo "Using $MPI_LAUNCHER $MPI_FLAG $NP"
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# helper to measure elapsed "real" time (seconds) while also showing program output
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measure_time() {
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local label="$1"; shift
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local -a cmd=("$@")
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echo "---- Running: $label ----"
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echo "Command: ${cmd[*]}"
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local outfile timefile
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outfile=$(mktemp)
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timefile=$(mktemp)
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if command -v /usr/bin/time >/dev/null 2>&1; then
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# /usr/bin/time prints real time with %e (seconds) into timefile
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/usr/bin/time -f "%e" -o "$timefile" "${cmd[@]}" 2>&1 | tee "$outfile"
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elapsed=$(<"$timefile")
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else
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# bash builtin time: capture stderr (which receives the timing) and stdout separately
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TIMEFORMAT='%R'
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{ time "${cmd[@]}" 1> "$outfile"; } 2> "$timefile"
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elapsed=$(<"$timefile")
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# also print program output
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cat "$outfile"
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fi
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rm -f "$outfile" "$timefile"
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# normalize elapsed to a number (strip spaces)
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echo "${elapsed//[[:space:]]/}"
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}
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# ensure executables exist
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for exe in mpi_hello_world mpi_pi serial_pi; do
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if [ ! -x "./$exe" ]; then
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echo "Error: executable ./$exe not found or not executable. Did make build it?" >&2
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exit 3
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fi
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done
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# run mpi_hello_world (show output, don't measure for comparison)
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echo "==> Executing mpi_hello_world"
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"$MPI_LAUNCHER" "$MPI_FLAG" "$NP" ./mpi_hello_world
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# measure mpi_pi
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mpi_elapsed=$(measure_time "mpi_pi" "$MPI_LAUNCHER" "$MPI_FLAG" "$NP" ./mpi_pi)
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# measure serial_pi
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serial_elapsed=$(measure_time "serial_pi" ./serial_pi)
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# compute comparison
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# protect against zero
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if awk "BEGIN{exit($mpi_elapsed <= 0)}"; then
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echo "Error: measured mpi_pi time is zero or negative." >&2
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exit 4
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fi
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speedup=$(awk -v s="$serial_elapsed" -v m="$mpi_elapsed" 'BEGIN{ if(m==0){print "inf"; exit} printf "%.3f", s/m }')
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diff=$(awk -v s="$serial_elapsed" -v m="$mpi_elapsed" 'BEGIN{printf "%.3f", s-m }')
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echo
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echo "Summary:"
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echo " mpi_pi time (s): $mpi_elapsed"
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echo " serial_pi time (s): $serial_elapsed"
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echo " Difference (serial - mpi) (s): $diff"
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echo " Speedup (serial / mpi): $speedup x"
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exit 0
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58
lab1/lab1.sh
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58
lab1/lab1.sh
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#!/bin/bash
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echo "Current directory: $PWD"
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# Build directory
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BUILD_DIR="./build/linux/x86_64/release"
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# Programs
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MPI_HELLO="$BUILD_DIR/mpi_hello_world"
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MPI_PI="$BUILD_DIR/mpi_pi"
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SERIAL_PI="$BUILD_DIR/serial_pi"
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# Check if programs exist
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if [[ ! -f "$MPI_HELLO" ]]; then
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echo "Error: $MPI_HELLO not found. Please build first."
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exit 1
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fi
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if [[ ! -f "$MPI_PI" ]]; then
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echo "Error: $MPI_PI not found. Please build first."
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exit 1
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fi
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if [[ ! -f "$SERIAL_PI" ]]; then
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echo "Error: $SERIAL_PI not found. Please build first."
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exit 1
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fi
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echo "Programs found. Starting tests..."
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# Test mpi_hello_world
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echo "Testing mpi_hello_world with default settings:"
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mpirun "$MPI_HELLO"
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echo "mpi_hello_world test completed."
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# Terms to test
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TERMS=(1000 100000 1000000 10000000 1000000000)
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PROCS=(1 2 3 4 5 6)
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echo ""
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echo "Testing mpi_pi with different terms and processes:"
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for procs in "${PROCS[@]}"; do
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for terms in "${TERMS[@]}"; do
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echo "Running mpi_pi with $procs processes and $terms terms:"
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mpirun -np $procs "$MPI_PI" <<< $terms
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echo ""
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done
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done
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echo ""
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echo "Testing serial_pi with different terms:"
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for terms in "${TERMS[@]}"; do
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echo "Running serial_pi with $terms terms:"
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"$SERIAL_PI" <<< $terms
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echo ""
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done
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echo "All tests completed."
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92
lab1/xmake.lua
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92
lab1/xmake.lua
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add_rules("mode.debug", "mode.release")
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-- Find MPI package
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add_requires("mpi", {system = true})
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add_requires("mpi_cxx", {system = true})
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target("mpi_hello_world")
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set_kind("binary")
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add_files("mpi_hello_world.c")
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add_packages("mpi")
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add_packages("mpi_cxx")
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target("mpi_pi")
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set_kind("binary")
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add_files("mpi_pi.c")
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add_packages("mpi")
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add_packages("mpi_cxx")
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target("serial_pi")
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set_kind("binary")
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add_files("serial_pi.c")
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--
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-- If you want to known more usage about xmake, please see https://xmake.io
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--
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-- ## FAQ
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--
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-- You can enter the project directory firstly before building project.
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--
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-- $ cd projectdir
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--
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-- 1. How to build project?
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--
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-- $ xmake
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--
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-- 2. How to configure project?
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--
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-- $ xmake f -p [macosx|linux|iphoneos ..] -a [x86_64|i386|arm64 ..] -m [debug|release]
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--
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-- 3. Where is the build output directory?
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--
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-- The default output directory is `./build` and you can configure the output directory.
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--
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-- $ xmake f -o outputdir
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-- $ xmake
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--
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-- 4. How to run and debug target after building project?
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--
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-- $ xmake run [targetname]
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-- $ xmake run -d [targetname]
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--
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-- 5. How to install target to the system directory or other output directory?
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--
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-- $ xmake install
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-- $ xmake install -o installdir
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--
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-- 6. Add some frequently-used compilation flags in xmake.lua
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--
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-- @code
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-- -- add debug and release modes
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-- add_rules("mode.debug", "mode.release")
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--
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-- -- add macro definition
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-- add_defines("NDEBUG", "_GNU_SOURCE=1")
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--
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-- -- set warning all as error
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-- set_warnings("all", "error")
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--
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-- -- set language: c99, c++11
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-- set_languages("c99", "c++11")
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--
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-- -- set optimization: none, faster, fastest, smallest
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-- set_optimize("fastest")
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--
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-- -- add include search directories
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-- add_includedirs("/usr/include", "/usr/local/include")
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--
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-- -- add link libraries and search directories
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-- add_links("tbox")
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-- add_linkdirs("/usr/local/lib", "/usr/lib")
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--
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-- -- add system link libraries
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-- add_syslinks("z", "pthread")
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--
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-- -- add compilation and link flags
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-- add_cxflags("-stdnolib", "-fno-strict-aliasing")
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-- add_ldflags("-L/usr/local/lib", "-lpthread", {force = true})
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--
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-- @endcode
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--
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