That just sounds like an attitude straight out of 1998 to me. I'm sure there are people who still operate that way, but I'm not convinced that they're the elite programmers. Scaling an app used to be about squeezing cycles from a single-core machine, now it's about maintaining correctness across dozens/hundreds of 16-core machines.
It's about both. Thinking about scaling on multicore systems doesn't replace thinking about low-level in-core performance details. It's something that an expert needs to be able to handle as well as everything that they already needed to know before multi-core systems became common.
Sure, I recently wrote a program in C to process a lot of data and consciously made the decision not to go multicore because I figured extra cache misses and mutexing/spinlocking while data was passed across queues wouldn't justify the additional CPU cycles I was getting for that particular problem.
I'm primarily a Java guy but am capable of switching to C, writing decent code there, and making decisions like that. Someone who refuses to use Java because it's too "corporate" might be a better C programmer than me but they're not a better programmer.
Take a look at the code in java.util.concurrent sometime, specifically the inner Sync classes. If that's insufficiently "hardcore" for you, I don't know what to say.
No one has suggested that it does (at least, no one in this thread).
Look, I get that there are people who really like Java, and that you've had to defend it for years against (often bogus) claims that it can't be used for x and y. I am not making any claims of the sort. Here is what I claim, put absolutely precisely so we can stop this nonsense:
The intersection of the following sets
1. engineers who I know
2. engineers who think deeply about performance
3. engineers who choose to write Java
is empty.
That's it. I haven't claimed that writing Java makes you uncool. I haven't claimed that it's impossible to do anything in Java. I haven't claimed that Java is unsuitable for any task. It's entirely possible that I simply don't know the right people, and that even though the intersection of the first two sets is large, it's not large enough. I certainly don't know everyone.
