Search found 17067 matches

by bob
Mon Aug 13, 2007 1:43 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: multithreading questions
Replies: 49
Views: 25214

Re: multithreading questions

1) my checkers program uses 64-bit hash records. if i understand bob's paper right, then on a 64-bit system, a hashtable read or write would be "atomic", i.e. on such systems i wouldn't have to care about hashing and locks at all? Yes I think this is true unless you modify parts of the global hash ...
by bob
Mon Aug 13, 2007 1:40 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: multithreading questions
Replies: 49
Views: 25214

Re: multithreading questions

Aleks, Integer flag decrement is not thread safe. If you make it safe it will be very slow. I don't know that much about multi-core programming so I'm sure you're right. Nevertheless could you expand upon this? How is it not safe? What would happen if you implemented a raw integer decrement? Steve ...
by bob
Mon Aug 13, 2007 1:35 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: multithreading questions
Replies: 49
Views: 25214

Re: multithreading questions

I had a look in the K10 optimization manual and 32-bit [LOCK] xchg is direct-path 15 cycles - of course relatively slow but it ensurses no other thread/process may modify the content between the read- and write cycle of the instruction due to the imlicit lock. I didn't inspect the assembly of the l...
by bob
Mon Aug 13, 2007 1:30 am
Forum: Computer Chess Club: General Topics
Topic: Questions regarding the Election and Nomination Process
Replies: 153
Views: 57876

Re: Questions regarding the Election and Nomination Process

when a member writes a long post full of valuable content, but is silly enough to include one out of line comment such as a personal attack, surely it makes more sense to edit out the offending remark and leave the valuable content? Graham, The only person entitled to edit a post is the poster. He ...
by bob
Sun Aug 12, 2007 1:15 am
Forum: Computer Chess Club: General Topics
Topic: Questions regarding the Election and Nomination Process
Replies: 153
Views: 57876

Re: Questions regarding the Election and Nomination Process

(2) I do have a big problem with CCC as it exists, and it is my intention to simply go elsewhere unless at least two things change significantly... (a) This crap of moderators _editing_ posts is going to stop for my posts, because there are not going to be any more posts from me to edit. It is a lo...
by bob
Sun Aug 12, 2007 1:08 am
Forum: Computer Chess Club: General Topics
Topic: Polls in the Help and Suggestions subforum
Replies: 28
Views: 8182

Re: Polls in the Help and Suggestions subforum

this shows an amazing lack of experience. "the ones that care will vote". Actually, the ones with an agenda will vote and vote often. It's happened in the past. We had a case several years ago where one person registered a _bunch_ of different login ids, in an attempt to stuff the moderator election...
by bob
Sat Aug 11, 2007 9:05 pm
Forum: Computer Chess Club: General Topics
Topic: Questions regarding the Election and Nomination Process
Replies: 153
Views: 57876

Re: Questions regarding the Election and Nomination Process

I think one issue is that sometimes context is overlooked. If a post provides useful information, I can deal with "that's a stupid idea" or "you are dense as a fence post" so long as it goes along with actual content. With some, the word "jackass" is an automatic deletion. Even should it contain a d...
by bob
Sat Aug 11, 2007 8:08 pm
Forum: Computer Chess Club: General Topics
Topic: Questions regarding the Election and Nomination Process
Replies: 153
Views: 57876

Re: Questions regarding the Election and Nomination Process

I do not disagree with anything you have said. It's a no brainer to me. Either we protect our hobby or we don't. Protection means cutting off problems at source. It is easy enough to do provided there is the power to do so for whoever moderates. Real people have sway over non entities. This should ...
by bob
Sat Aug 11, 2007 6:59 pm
Forum: Computer Chess Club: General Topics
Topic: Questions regarding the Election and Nomination Process
Replies: 153
Views: 57876

Re: Questions regarding the Election and Nomination Process

IF we are both elected i think there will be several things that will have to change Steve I'm sure that the voters would love to know what you mean with this statement Steve. Also the votes in the forthcoming election could well tell you a different story. Perhaps the great majority of members are...
by bob
Wed Jul 25, 2007 8:39 pm
Forum: Computer Chess Club: General Topics
Topic: My Thoughts on the debate
Replies: 10
Views: 3634

Re: My Thoughts on the debate

I thought I was done here, but as always, a private email drags me back to at least set the record straight... I will be more than happy to produce a complete log of all ICC messages to channel 64, and _all_ kibitzes from the Crafty games. Crafty's first game on the second day was against Petir and ...