NUMA aware memory allocator for Apache Ignite

Allocates memory on linux using libnuma under the hood.

Requirements

libnuma 2.0.x must be installed on your Linux machine. It is recommended to install numactl utility also.

1. RHEL or Cent OS

$ sudo yum install numactl

2. Ubuntu or Debian

$ sudo apt install numactl

Building from source

JDK, C++ 11 compatible compiler (gcc >= 4.8.5) and libnuma headers

1. RHEL or Cent OS

$ sudo yum groupinstall 'Development Tools'
$ sudo yum install java-1.8.0-openjdk numactl-devel libstdc++-static

2. Ubuntu or Debian

$ sudo apt install build-essential libnuma-dev openjdk-8-jdk

Usage

Simple allocation strategy

1. Allocation with default NUMA policy for thread/process, uses void *numa_alloc(size_t) under the hood:

<property name="dataStorageConfiguration">
    <bean class="org.apache.ignite.configuration.DataStorageConfiguration">
        <property name="defaultDataRegionConfiguration">
            <bean class="org.apache.ignite.configuration.DataRegionConfiguration">
                <property name="name" value="Default_Region"/>
                ....
                <property name="memoryAllocator">
                    <bean class="org.apache.ignite.mem.NumaAllocator">
                        <constructor-arg>
                            <bean class="org.apache.ignite.mem.SimpleNumaAllocationStrategy"/>
                        </constructor-arg>
                    </bean>
                </property>
            </bean>
        </property>
    </bean>
</property>

2. Allocation on specific NUMA node, uses void *numa_alloc_onnode(size_t, int) under the hood:

<property name="dataStorageConfiguration">
    <bean class="org.apache.ignite.configuration.DataStorageConfiguration">
        <property name="defaultDataRegionConfiguration">
            <bean class="org.apache.ignite.configuration.DataRegionConfiguration">
                <property name="name" value="Default_Region"/>
                ....
                <property name="memoryAllocator">
                    <bean class="org.apache.ignite.mem.NumaAllocator">
                        <constructor-arg>
                            <bean class="org.apache.ignite.mem.SimpleNumaAllocationStrategy">
                                <constructor-arg name="node" value="0"/>
                            </bean>
                        </constructor-arg>
                    </bean>
                </property>
            </bean>
        </property>
    </bean>
</property>

Interleaved allocation strategy.

1. Interleaved allocation on all NUMA nodes, uses void *numa_alloc_interleaved(size_t) under the hood:

<property name="dataStorageConfiguration">
    <bean class="org.apache.ignite.configuration.DataStorageConfiguration">
        <property name="defaultDataRegionConfiguration">
            <bean class="org.apache.ignite.configuration.DataRegionConfiguration">
                <property name="name" value="Default_Region"/>
                ....
                <property name="memoryAllocator">
                    <bean class="org.apache.ignite.mem.NumaAllocator">
                        <constructor-arg>
                            <bean class="org.apache.ignite.mem.InterleavedNumaAllocationStrategy"/>
                        </constructor-arg>
                    </bean>
                </property>
            </bean>
        </property>
    </bean>
</property>

2. Interleaved allocation on specified NUMA nodes, uses void *numa_alloc_interleaved_subset(size_t, struct bitmask*) under the hood:

<property name="dataStorageConfiguration">
    <bean class="org.apache.ignite.configuration.DataStorageConfiguration">
        <property name="defaultDataRegionConfiguration">
            <bean class="org.apache.ignite.configuration.DataRegionConfiguration">
                <property name="name" value="Default_Region"/>
                ....
                <property name="memoryAllocator">
                    <bean class="org.apache.ignite.mem.NumaAllocator">
                        <constructor-arg>
                            <bean class="org.apache.ignite.mem.InterleavedNumaAllocationStrategy">
                                <constructor-arg name="nodes">
                                    <array>
                                        <value>0</value>
                                        <value>1</value>
                                    </array>
                                </constructor-arg>
                            </bean>
                        </constructor-arg>
                    </bean>
                </property>
            </bean>
        </property>
    </bean>
</property>

Local node allocation strategy

Allocation on local for process NUMA node, uses void* numa_alloc_onnode(size_t) under the hood.

<property name="dataStorageConfiguration">
    <bean class="org.apache.ignite.configuration.DataStorageConfiguration">
        <property name="defaultDataRegionConfiguration">
            <bean class="org.apache.ignite.configuration.DataRegionConfiguration">
                <property name="name" value="Default_Region"/>
                ....
                <property name="memoryAllocator">
                    <bean class="org.apache.ignite.mem.NumaAllocator">
                        <constructor-arg>
                            <constructor-arg>
                                <bean class="org.apache.ignite.mem.LocalNumaAllocationStrategy"/>
                            </constructor-arg>
                        </constructor-arg>
                    </bean>
                </property>
            </bean>
        </property>
    </bean>
</property>