Re: [Pytables-users] What is the result of calling craeteIndex() on multiple columns?

2012-06-27 Thread Francesc Alted
On 6/26/12 11:19 PM, Aquil H. Abdullah wrote: > Hello All, > > In my newbist state, I called createIndex on two columns in one of my > tables: > > import tables > table_desc = {'timestamp':tables.Time32Col(), > 'symbol':tables.StringCol(8), 'observation':tables.Float32Col()} > h5f = tables.openFi

Re: [Pytables-users] What is the result of calling craeteIndex() on multiple columns?

2012-06-27 Thread Aquil H. Abdullah
Hello Francesc, Thank you for your response! I guess I need to read the User's Guide cover to cover. -- Aquil H. Abdullah On Wednesday, June 27, 2012 at 4:44 AM, Francesc Alted wrote: > On 6/26/12 11:19 PM, Aquil H. Abdullah wrote: > > Hello All, > > > > In my newbist state, I called

Re: [Pytables-users] Having Trouble With Threaded Writing to PyTables

2012-06-27 Thread Jacob Bennett
Sorry about that, I uploaded the code, but since it requires many dependencies, I was not expecting you to run it. That being said, I would say the expected number of rows per table is 100,000 and I am currently working on an intel xeon with 4 processors and 8 threads. I also found that pytables h

Re: [Pytables-users] Having Trouble With Threaded Writing to PyTables

2012-06-27 Thread Jacob Bennett
Update: It actually seems that I am bottlenecking in my performance before I even get to writing data. It seems that my current search procedure is very computationally ineffcient. I have pasted the active portion of my code, and I have also attached the copy of my dataWrapper. I have narrowed the

[Pytables-users] How Fast is File.__contains, File.getNode, File.createTable?

2012-06-27 Thread Jacob Bennett
Hello PyTables Users, I am asking this quick question because my application is currently horribly bottlenecking on these methods, all of which are called once before each Table.append(rows). The table writing on the other hand is much, much faster than the searching for the table. Any general di