simple and true dual port ram

[Cagri]

Hi,

Does someone know if I can use freePDK45 to generate simple and true dual port rams? I tried to use num_rw_ports option but I have an error. I doubt that this freePDK45nm technology does not support it.

Thanks in advance.

Cagri

[Matthew Guthaus]

Hi Cagri,

Yes, we support single and dual port. I'm not sure what you mean by "true" dual port -- maybe non-multiplexed? If so, yes.

You can see some examples in our example_config directory for different scenarios:

openram/compiler/example_configs

Matt

--
https://openram.soe.ucsc.edu
---
You received this message because you are subscribed to the Google Groups "OpenRAM User" group.
To unsubscribe from this group and stop receiving emails from it, send an email to openram-user-gr...@ucsc.edu.
To view this discussion on the web visit https://groups.google.com/a/ucsc.edu/d/msgid/openram-user-group/89794ba0-92ab-4e0c-8288-41dc1e0a6f75%40ucsc.edu.

--

Matthew Guthaus

Associate Dean of Graduate Studies

Professor, Computer Science & Engineering

Baskin School of Engineering

University of California Santa Cruz

https://www.soe.ucsc.edu/people/mrg

[Cagri]

Thanks for the rapid answer and this helpful openRAM project.

By saying true dual port ram, I meant that read and write access to the memory are allowed an either ports of the ram.

When I enable num_rw_ports = 2 in my config file, I received this error: ModuleNotFoundError: No module named 'dummy_bitcell_2rw_'. Do we need to generate this dummy_bitcell files for each configuration seperately?

Regards,

Cagri

On Monday, January 6, 2020 at 6:13:48 PM UTC+1, Matthew Guthaus wrote:

Hi Cagri,

Yes, we support single and dual port. I'm not sure what you mean by "true" dual port -- maybe non-multiplexed? If so, yes.

You can see some examples in our example_config directory for different scenarios:

openram/compiler/example_configs

Matt

On Mon, Jan 6, 2020 at 9:05 AM Cagri <acba...@gmail.com> wrote:

Hi,

Does someone know if I can use freePDK45 to generate simple and true dual port rams? I tried to use num_rw_ports option but I have an error. I doubt that this freePDK45nm technology does not support it.

Thanks in advance.

Cagri

--
https://openram.soe.ucsc.edu
---
You received this message because you are subscribed to the Google Groups "OpenRAM User" group.

To unsubscribe from this group and stop receiving emails from it, send an email to openram-user-group+unsub...@ucsc.edu.

To view this discussion on the web visit https://groups.google.com/a/ucsc.edu/d/msgid/openram-user-group/89794ba0-92ab-4e0c-8288-41dc1e0a6f75%40ucsc.edu.

[Matthew Guthaus]

Which version (commit id) of OpenRAM are you using? Did you modify it in any way? Please use the most recent version. I can't replicate this problem, this should work.

Matt

---

Matthew Guthaus
Associate Dean of Graduate Studies
Professor, Computer Science & Engineering
Baskin School of Engineering
University of California Santa Cruz
https://www.soe.ucsc.edu/people/mrg

On Wed, Jan 8, 2020, 02:56 Cagri <acba...@gmail.com> wrote:

Thanks for the rapid answer and this helpful openRAM project.

By saying true dual port ram, I meant that read and write access to the memory are allowed an either ports of the ram.

When I enable num_rw_ports = 2 in my config file, I received this error: ModuleNotFoundError: No module named 'dummy_bitcell_2rw_'. Do we need to generate this dummy_bitcell files for each configuration seperately?

Regards,

Cagri

On Monday, January 6, 2020 at 6:13:48 PM UTC+1, Matthew Guthaus wrote:

Hi Cagri,

Yes, we support single and dual port. I'm not sure what you mean by "true" dual port -- maybe non-multiplexed? If so, yes.

You can see some examples in our example_config directory for different scenarios:

openram/compiler/example_configs

Matt

On Mon, Jan 6, 2020 at 9:05 AM Cagri <acba...@gmail.com> wrote:

Hi,

Does someone know if I can use freePDK45 to generate simple and true dual port rams? I tried to use num_rw_ports option but I have an error. I doubt that this freePDK45nm technology does not support it.

Thanks in advance.

Cagri

--
https://openram.soe.ucsc.edu
---
You received this message because you are subscribed to the Google Groups "OpenRAM User" group.

To unsubscribe from this group and stop receiving emails from it, send an email to openram-user-gr...@ucsc.edu.

To view this discussion on the web visit https://groups.google.com/a/ucsc.edu/d/msgid/openram-user-group/89794ba0-92ab-4e0c-8288-41dc1e0a6f75%40ucsc.edu.

--

Matthew Guthaus

Associate Dean of Graduate Studies

Professor, Computer Science & Engineering

Baskin School of Engineering

University of California Santa Cruz

https://www.soe.ucsc.edu/people/mrg

--

https://openram.soe.ucsc.edu
---
You received this message because you are subscribed to the Google Groups "OpenRAM User" group.

To unsubscribe from this group and stop receiving emails from it, send an email to openram-user-gr...@ucsc.edu.
To view this discussion on the web visit https://groups.google.com/a/ucsc.edu/d/msgid/openram-user-group/340bf445-8e0c-45e8-8580-407392617e6e%40ucsc.edu.

[Matthew Guthaus]

By default, we come with custom bitcells for 1 rw,1 r and 1 w,1 r, but this should trigger the parametrized bitcell which is much less dense. 

Note that there may be issues with write through, writing and reading to the same address. I recommend that you double check this.

[Maurizio Martina]

Hi,

I have a similar problem with the freepdk45.

I can generate 1rw RAM and 1rw_1r RAM as in the examples.

However, when trying 2rw RAM (a) or 1w_1r RAM (b) I got the following errors:

(a) ModuleNotFoundError: No module named 'dummy_bitcell_2rw_'

(b) AssertionError

The configuration files are set as:

(a)

num_rw_ports=2
num_r_ports=0
num_w_ports=0

(b)

num_rw_ports=0
num_r_ports=1
num_w_ports=1

I tryed v1.1.4 and v1.1.5 but with both I get the same error message.

Am I making something wrong ?

Many thanks,

Maurizio