Make Laika compile on GCC 7. Add setup scripts.

Author: obi1kenobi

Dockerfile

@@ -1,3 +1,12 @@
-FROM gcc:5
-ADD . /usr/src/laika
-WORKDIR /usr/src/laika
+FROM ubuntu:18.04
+# Ubuntu 18.04 ships with GCC 7, which is sufficiently new for Laika to work.
+
+ADD ./scripts /laika/scripts
+RUN chmod +x /laika/scripts/aws_setup.sh && \
+    /laika/scripts/aws_setup.sh && \
+    chmod +x /laika/scripts/download_input_data.sh && \
+    /laika/scripts/download_input_data.sh
+
+ADD . /laika
+
+WORKDIR /laika

scripts/aws_setup.sh

@@ -1,9 +1,14 @@
 #!/usr/bin/env bash
-add-apt-repository -y ppa:ubuntu-toolchain-r/test
+
+# Fail on first error, on undefined variables, and on failures in a pipeline.
+set -euo pipefail
+
+# Print each executed line.
+set -x
+
 apt-get update
-apt-get install -y build-essential openssl htop curl wget make vim git gitk gcc-5 g++-5 linux-tools-common linux-tools-generic keychain mpich libmpich-dev mosh
 
-pushd /usr/bin
-rm g++
-ln -s g++-5 g++
-popd
+apt-get install -y \
+    build-essential openssl htop curl wget make vim git \
+    linux-tools-common linux-tools-generic keychain mosh \
+    python python3.6

scripts/download_input_data.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+# Fail on first error, on undefined variables, and on failures in a pipeline.
+set -euo pipefail
+
+# Print each executed line.
+set -x
+
+wget -O /tmp/mesh_inputs.tar.gz https://www.dropbox.com/s/zhzzhfc5kx31lpi/mesh_inputs.tar.gz?dl=1
+
+mkdir -p /laika/input_data
+
+tar -xf /tmp/mesh_inputs.tar.gz --directory /laika/input_data

src/graph_compute/numa_scheduling.h

@@ -83,7 +83,7 @@ inline T logBaseTwoRoundUp(T x) {
 __attribute__((target("sse4.2")))
 inline uint32_t randomValue(const uint32_t seed,
                             const unsigned int randVal = 0xF1807D63) {
-  return _mm_crc32_u32(randVal, seed);
+  return __builtin_ia32_crc32si(randVal, seed);
 }
 
 static inline bool samePhase(vid_t v, vid_t w, chunkdata_t * const chunkdata) {