blob: f05e6640a83e7d7bae6169057b6b53e951f80937 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
<!---
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the License for the
specific language governing permissions and limitations
under the License.
-->
# Red Arrow CUDA - Apache Arrow CUDA Ruby
Red Arrow CUDA is the Ruby bindings of Apache Arrow CUDA. Red Arrow CUDA is based on GObject Introspection.
[Apache Arrow CUDA](https://arrow.apache.org/) is an in-memory columnar data store on GPU.
[GObject Introspection](https://wiki.gnome.org/action/show/Projects/GObjectIntrospection) is a middleware for language bindings of C library. GObject Introspection can generate language bindings automatically at runtime.
Red Arrow CUDA uses [Apache Arrow CUDA GLib](https://github.com/apache/arrow/tree/master/c_glib) and [gobject-introspection gem](https://rubygems.org/gems/gobject-introspection) to generate Ruby bindings of Apache Arrow CUDA.
Apache Arrow CUDA GLib is a C wrapper for [Apache Arrow CUDA C++](https://github.com/apache/arrow/tree/master/cpp). GObject Introspection can't use Apache Arrow CUDA C++ directly. Apache Arrow CUDA GLib is a bridge between Apache Arrow CUDA C++ and GObject Introspection.
gobject-introspection gem is a Ruby bindings of GObject Introspection. Red Arrow CUDA uses GObject Introspection via gobject-introspection gem.
## Install
Install Apache Arrow CUDA GLib before install Red Arrow CUDA. Install Apache Arrow GLib before install Red Arrow. See [Apache Arrow install document](https://arrow.apache.org/install/) for details.
Install Red Arrow CUDA after you install Apache Arrow CUDA GLib:
```text
% gem install red-arrow-cuda
```
## Usage
```ruby
require "arrow-cuda"
manager = ArrowCUDA::DeviceManager.new
if manager.n_devices.zero?
raise "No GPU is found"
end
context = manager[0]
buffer = ArrowCUDA::Buffer.new(context, 128)
ArrowCUDA::BufferOutputStream.open(buffer) do |stream|
stream.write("Hello World")
end
puts buffer.copy_to_host(0, 11) # => "Hello World"
```
|
