max_dim_x and max_dim_y of SPECTRUM and IMAGE attributes

# 3 years ago
zreszela	Hi all, I wonder if using an exaggerated max_dim_x (and max_dim_y) when defining a SPECTRUM (and IMAGE) attribute may have any performance impact when, for example, reading an attribute. I would assume that not, since these fields are part of the attribute configuration. But it would be nice if you confirm:) Many thanks, Zibi

# 3 years ago
Reynald	Hi Zibi, I wonder if using an exaggerated max_dim_x (and max_dim_y) when defining a SPECTRUM (and IMAGE) attribute may have any performance impact when, for example, reading an attribute. I don't think this has any impact on performances, unless a specific client is using this configuration value to pre-allocate some (huge) buffers, so this would then affect the memory consumption. On the server side, if the real attribute value has dim_x and dim_y dimensions lower than max_dim_x and max_dim_y values resp., only dim_x * dim_y data values are sent to the client on the network, not max_dim_x * max_dim_y. Rosenberg's Law: Software is easy to make, except when you want it to do something new. Corollary: The only software that's worth making is software that does something new.

# 3 years ago

Reynald

Hi Zibi,

I wonder if using an exaggerated max_dim_x (and max_dim_y) when defining a SPECTRUM (and IMAGE) attribute may have any performance impact when, for example, reading an attribute.

I don't think this has any impact on performances, unless a specific client is using this configuration value to pre-allocate some (huge) buffers, so this would then affect the memory consumption.

On the server side, if the real attribute value has dim_x and dim_y dimensions lower than max_dim_x and max_dim_y values resp., only dim_x * dim_y data values are sent to the client on the network, not max_dim_x * max_dim_y.

Rosenberg's Law: Software is easy to make, except when you want it to do something new.
Corollary: The only software that's worth making is software that does something new.

# 3 years ago
zreszela	Thank you Reynald! BTW, I have not received an email notification for your answer. I suppose this is not normal. To discard issues with my email client, spam filters, etc. I have now subscribed explicitly to this thread (Subscribe button below the last post). Reynald, could you please write a new test post in this thread to see if now I get it? Thanks!

# 3 years ago
Reynald	Hi Zibi, Here is test post you asked for. Sorry for the delay. Rosenberg's Law: Software is easy to make, except when you want it to do something new. Corollary: The only software that's worth making is software that does something new.

# 3 years ago
zreszela	Thanks Reyndald! I have received this email. So I think there is something wrong with forum, cause I would expect that the replies to the thread I just created should be sent to me by default.