Upgrade libtorch v2.0.0 (#108)

* Upgrade to libtorch v2.0.0.

* Add torch cxx flags.

* Add pthread cxx flag on Linux.

CMakeLists.txt

@@ -7,7 +7,7 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 option(DOWNLOAD_DATASETS "Automatically download required datasets at build-time." ON)
 option(CREATE_SCRIPTMODULES "Automatically create all required scriptmodule files at build-time (requires python3)." OFF)
 
-set(PYTORCH_VERSION "1.13.1")
+set(PYTORCH_VERSION "2.0.0")
 set(PYTORCH_MIN_VERSION "1.12.0")
 
 find_package(Torch QUIET PATHS "${CMAKE_SOURCE_DIR}/libtorch")
@@ -20,6 +20,11 @@ if((NOT Torch_FOUND) OR (("${Torch_VERSION}" VERSION_LESS "${PYTORCH_MIN_VERSION
 endif()
 
 message(STATUS "Torch version ${Torch_VERSION}")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${TORCH_CXX_FLAGS}")
+
+if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
+endif()
 
 if(CREATE_SCRIPTMODULES)
     find_package(Python3 COMPONENTS Interpreter REQUIRED)

Dockerfile

@@ -31,8 +31,8 @@ RUN curl --silent --show-error --location --output ~/miniconda.sh https://repo.a
 
 FROM conda AS conda-installs
 # Install pytorch for CPU and torchvision.
-ARG PYTORCH_VERSION=1.13.1
-ARG TORCHVISION_VERSION=0.14.1
+ARG PYTORCH_VERSION=2.0.0
+ARG TORCHVISION_VERSION=0.15.1
 ENV NO_CUDA=1
 RUN conda install pytorch==${PYTORCH_VERSION} torchvision==${TORCHVISION_VERSION} cpuonly -y -c pytorch && conda clean -ya
 

README.md

@@ -5,12 +5,12 @@
     C++ Implementation of PyTorch Tutorials for Everyone
     <br />
 <img src="https://img.shields.io/github/license/prabhuomkar/pytorch-cpp">
-<img src="https://img.shields.io/badge/libtorch-1.13.1-ee4c2c">
+<img src="https://img.shields.io/badge/libtorch-2.0.0-ee4c2c">
 <img src="https://img.shields.io/badge/cmake-3.14-064f8d">
 </p>
 
 
-| OS (Compiler)\\LibTorch |                                                  1.13.1                                                |
+| OS (Compiler)\\LibTorch |                                                  2.0.0                                                |
 | :--------------------- | :--------------------------------------------------------------------------------------------------- |
 |    macOS (clang 11, 12, 13)    | [![Status](https://github.com/prabhuomkar/pytorch-cpp/actions/workflows/build_macos.yml/badge.svg?branch=master)](https://github.com/prabhuomkar/pytorch-cpp/actions?query=workflow%3Aci-build-macos) |
 |      Linux (gcc 9, 10, 11)      | [![Status](https://github.com/prabhuomkar/pytorch-cpp/actions/workflows/build_ubuntu.yml/badge.svg?branch=master)](https://github.com/prabhuomkar/pytorch-cpp/actions?query=workflow%3Aci-build-ubuntu) |
@@ -52,7 +52,7 @@ This repository provides tutorial code in C++ for deep learning researchers to l
 
 1. [C++-17](http://www.cplusplus.com/doc/tutorial/introduction/) compatible compiler
 2. [CMake](https://cmake.org/download/) (minimum version 3.14)
-3. [LibTorch version >= 1.12.0 and <= 1.13.1](https://pytorch.org/cppdocs/installing.html)
+3. [LibTorch version >= 1.12.0 and <= 2.0.0](https://pytorch.org/cppdocs/installing.html)
 4. [Conda](https://docs.conda.io/projects/conda/en/latest/user-guide/install/download.html)
 
 
@@ -89,7 +89,7 @@ Some useful options:
 
 | Option       | Default           | Description  |
 | :------------- |:------------|-----:|
-| `-D CUDA_V=(11.6\|11.7\|none)`     | `none` | Download LibTorch for a CUDA version (`none` = download CPU version). |
+| `-D CUDA_V=(11.7\|11.8\|none)`     | `none` | Download LibTorch for a CUDA version (`none` = download CPU version). |
 | `-D LIBTORCH_DOWNLOAD_BUILD_TYPE=(Release\|Debug)` | `Release` | Determines which libtorch build type version to download (only relevant on **Windows**).|
 | `-D DOWNLOAD_DATASETS=(OFF\|ON)`     | `ON`      |   Download required datasets during build (only if they do not already exist in `pytorch-cpp/data`). |
 |`-D CREATE_SCRIPTMODULES=(OFF\|ON)` | `OFF` | Create all required scriptmodule files for prelearned models / weights during build. Requires installed  python3 with  pytorch and torchvision. |
@@ -116,14 +116,14 @@ cmake -B build \
 <summary><b>Example Windows</b></summary>
 
 ##### Aim
-* Automatically download LibTorch for CUDA 11.7 (Release version) and all necessary datasets.
+* Automatically download LibTorch for CUDA 11.8 (Release version) and all necessary datasets.
 * Do not create scriptmodule files.
 
 ##### Command
 ```bash
 cmake -B build \
 -A x64 \
--D CUDA_V=11.7
+-D CUDA_V=11.8
 ```
 </details>
 

cmake/fetch_libtorch.cmake

@@ -2,16 +2,16 @@ cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
 
 include(FetchContent)
 
-set(CUDA_V "none" CACHE STRING "Determines libtorch CUDA version to download (11.6, 11.7 or none).")
+set(CUDA_V "none" CACHE STRING "Determines libtorch CUDA version to download (11.7, 11.8 or none).")
 
 if(${CUDA_V} STREQUAL "none")
     set(LIBTORCH_DEVICE "cpu")
-elseif(${CUDA_V} STREQUAL "11.6")
-    set(LIBTORCH_DEVICE "cu116")
 elseif(${CUDA_V} STREQUAL "11.7")
     set(LIBTORCH_DEVICE "cu117")
+elseif(${CUDA_V} STREQUAL "11.8")
+    set(LIBTORCH_DEVICE "cu118")
 else() 
-    message(FATAL_ERROR "Invalid CUDA version specified, must be 11.6, 11.7 or none!")
+    message(FATAL_ERROR "Invalid CUDA version specified, must be 11.7, 11.8 or none!")
 endif()
 
 if(${CMAKE_SYSTEM_NAME} STREQUAL "Windows")