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在 64 bit 平台上一个 oop 指针占用 8 bytes 的大小，在 Java 堆中各种地方都塞满了 OOP 指针，如果大家都是 8 bytes 那占用的大小就比较大。所以 64 bit 平台上 JVM 使用了压缩指针技术 Compressed OOP。它引入了一种窄指针...

Cause there's not much material telling me about how OOP access is implemented (apart from comments in OpenJDK Hotspot C++ code), I am going to analyze how...

G1 GC 的算法原理不赘述，此处专门分析 OpenJDK 21 Hotspot JVM 的 G1 GC 具体实现细节。

Notes from the Nvidia seminar at Peking University LCPU: accelerating computing, DOCA and RDMA virtualization.

收集点牛逼或者有意思的内容，非原创合集。A collection of interesting non-original content.

Adding a load barrier to OpenJDK 21 G1 GC heap and debugging the resulting C2 JIT crash.

When developing CoHPC, I use QEMU to launch virtual machine and setup VM with cloud-init.

After installed Module package manager on HPC cluster, we should add packages.

Introduction to the CoHPC (Cloud on HPC) project: launching VMs on HPC clusters without privileges.

I tries to boot Windows on QEMU 9.2.0. This is how the process goes.

由于CoHPC项目计划部署在北大未名二号高性能计算平台上，在开发环节测试，首先自己部署一个Slurm集群。

Troubleshooting an SSH failure onto a macOS machine: kex_exchange_identification connection closed.

On Ubuntu, install MySQL with apt install mysql-server, and root user could authenticate with authsocket plugin and enable local cmdline login without...

I don’t want to use docker anymore, just deploy a NextChat front-end.

I was home in holiday and sometimes need to log onto servers in campus net. However VPN tool suggested by university (Pulse Secure) is inconvenient.

新买的MacMini M4到货了，可以开始配置。