> Sun was working on its early multi core workstations This article is from 1995, and they were out a bit earlier than that. Sun had been shipping 4-core works

> Sun was working on its early multi core workstations This article is from 1995, and they were out a bit earlier than that. Sun had been shipping 4-core workstations with thread support since 1993. The SPARCstation 10 came out in 1992 and had two MBus slots. Each slot could take a CPU card with 1 or 2 CPUs on it. Although SunOS 4.x had very limited multi-CPU support, SunOS 5.x had support for multiple CPUs. SunOS 5.1 (Solaris 2.1) came out in 1992 and supported SMP, and SunOS 5.2 (Solaris 2.2) came out in 1993 and introduced a thread API. By 1995, they had also introduced the SPARCstation 20 and the 64-bit Ultra 2. They also had some server systems (like the SPARCcenter 2000) that had a backplane with several boards that could themselves have CPU cards. I don't know the maximum number of CPUs, probably something like 20. Info from my memory and: http://mbus.sunhelp.org/index.htm http://mbus.sunhelp.org/index.htm https://en.wikipedia.org/wiki/SPARCstation_10 https://en.wikipedia.org/wiki/SPARCstation_10 https://en.wikipedia.org/wiki/Solaris_(operating_system) https://en.wikipedia.org/wiki/Solaris_(operating_system)